<i>Paraparchites texanus</i> Delo, 1930 Fig. 7C <i>Paraparchites humerosus</... more <i>Paraparchites texanus</i> Delo, 1930 Fig. 7C <i>Paraparchites humerosus</i> var. <i>texana</i> Delo, 1930: 153, pl. 12 fig. 1. <i>Paraparchites texanus</i> – Sohn 1971: A8, pl. 2 figs 1–2, 7–10, 13–15, with all previous synonyms therein. non <i>Paraparchites texanus</i> – Crasquin-Soleau &amp; Orchard 1994: 59, 60, pl. 4 fig. 12. — Yi 2004: pl. 2 fig. 13. Material examined USA • 1 complete carapace; Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 4 (GM5); Capitanian, Middle Permian; MNHN.F.F63403 • 2 complete carapaces; same locality as for preceding; Capitanian, Middle Permian; MNHN.F.F63485. Occurrence Menar and Tom Green Counties, Texas, USA, Kungurian (Arroyo Formation), Early Permian (Sohn 1971 and all references therein); sample 4 (GM5), MKCS 1 section, 'McKittrick Canyon' Member, Bell Canyon Formation, Capitanian; Guadalupe Mountains, West Texas, USA, Guadalupian, Middle Permian (this work).
<i>Glyptopleura</i> sp. Fig. 6M Material examined USA • 1 right valve; Guadalupe Moun... more <i>Glyptopleura</i> sp. Fig. 6M Material examined USA • 1 right valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F.F63395 • 7 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM1, GM2, and GM3; Roadian, Middle Permian; MNHN.F.F63482. Remarks A species of <i>Glyptopleura</i> with 6 thick ridges on the lateral surface, the upper two ridges are shorter than the others and end before PB. This species may be new, but the material is poorly preserved. So far, this species is the youngest representative of <i>Glyptopleura</i>. Occurrence Samples GM1, GM2, and GM3, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).
The impact of the late Devonian Hangenberg Event on ostracods is quantified for the first time fr... more The impact of the late Devonian Hangenberg Event on ostracods is quantified for the first time from newly acquired data from the Blue Snake section, Guizhou Province, South China. Ninety–eight species belonging to 31 genera are identified and figured. Four new species are described: Clavofabella? lanshella sp. nov., Sansabella gelaohensis sp. nov., Cytherellina caerulea sp. nov., Sulcella baisuzhena sp. nov. The ostracod associations from the Blue Snake section document a significant drop in specific diversity as well as major changes in taxonomic composition through the Hangenberg Event. We here report the reduction of the proportion of Palaeocopida and the increase in that of Podocopida between the latest Famennian and the Tournaisian. The specific extinction and renewal rates are estimated at 44% and 62%, respectively. The main factor of the post–crisis renewal of ostracod faunas in the Blue Snake section appears to be the progressive diversification of the family Bairdiidae and ...
<i>Ceratobairdia mescaleroella</i> Forel sp. nov. urn:lsid:zoobank.org:act: 52B30AEF-... more <i>Ceratobairdia mescaleroella</i> Forel sp. nov. urn:lsid:zoobank.org:act: 52B30AEF-EB47-4D12-A0BC-20EC095A2F6F Figs 5E, 8O–R, 9A–C Diagnosis A species of <i>Ceratobairdia</i> with three spines, two long and one short, along the dorsal margin of LV and the ventro-lateral ala not terminated by spine. Etymology From the tribe of Mescalero Apaches who inhabited parts of the Southwest US and Northwest Mexico. Material examined <b>Holotype</b> USA • left valve, (Fig. 8O); Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 4 (GM5); Capitanian, Middle Permian; MNHN.F.F63433. <b>Paratypes</b> USA • 1 left valve (Fig. 9A); Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 4 (GM5); Capitanian, Middle Permian; MNHN.F.F63435 (Fig. 8Q) • 1 right valve; same locality and sample as for preceding; Capitanian, Middle Permian; MNHN.F.F63437. <b>Additional material</b> USA • 1 left valve; Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 4 (GM5); Capitanian, Middle Permian; MNHN.F.F63434 • 1 left valve; same locality and sample as for preceding; Capitanian, Middle Permian; MNHN.F.F63436 • 1 left valve; same locality as for preceding but sample 2 (GM6); Capitanian, Middle Permian; MNHN.F.F63438 • 1 left valve; same locality and sample as for preceding; Capitanian, Middle Permian; MNHN.F.F63439 . • 13 valves; Guadalupe Mountains, West Texas, 'McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, samples 4 (GM5) and 2 (GM6); Capitanian, Middle Permian; MNHN.F.F63495. Dimensions See Fig. 5E. Description LV: stocky, subtriangular in lateral view with Hmax along DB and Lmax in lower half of H; dorsal margin uniformly arched with concave ADB and PDB, and apex of curvature with 3 equidistant spines; the 3 spines triangular in shape and thickest at base, central spine sub-vertical, external spines biggest, anterior one oriented anteriorly and posterior one orien [...]
<i>Microcheilinella</i> sp. 15 in Zazzali <i>et al</i>. 2015 Fig. 11M <... more <i>Microcheilinella</i> sp. 15 in Zazzali <i>et al</i>. 2015 Fig. 11M <i>Microcheilinella</i> sp. 15 – Zazzali <i>et al</i>. 2015: fig. 12m. Material examined USA • 1 complete carapace; Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 4 (GM5); Capitanian, Middle Permian; MNHN.F.F63466 • 1 complete carapace, 3 left valves; same locality as for preceding but samples 4 (GM5) and 2 (GM6); Capitanian, Middle Permian; MNHN.F.F63471. Occurrence Chaotian section, Sichuan, China, Wuchiapingian, Late Permian (Zazzali <i>et al.</i> 2015); samples 4 (GM5) and 2 (GM6), MKCS 1 section, 'McKittrick Canyon' Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work). Remarks The carapace of this species is subtriangular in lateral view, with large AB and strong overlap of LV on RV, hemi-circular furrows are visible on the medio-anterior and medio-posterior parts of the carapace in both valves.
<i>Paraparchites pecosensis</i> Crasquin sp. nov. urn:lsid:zoobank.org:act: E76693E7-... more <i>Paraparchites pecosensis</i> Crasquin sp. nov. urn:lsid:zoobank.org:act: E76693E7-FD8A-4E7B-9328-6D3248AC584F Figs 5D, 7D–H Diagnosis A species of <i>Paraparchites</i> with a small hemi-circular ridge at mid-H of PB on both valves and a weak overreach of RV above hinge-line. Etymology In reference to the Pecos River, West Texas, USA. Material examined <b>Holotype</b> USA • complete carapace, (Fig. 7D); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F.F63404. <b>Paratype</b> USA • 1 complete carapace, (Fig. 7H); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F.F63408. <b>Additional material</b> USA • 1 complete carapace; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F.F63405 • 1 right valve; same locality as for preceding; Roadian, Middle Permian; MNHN.F.F63407 • 1 right valve; Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample GM6; Capitanian, Middle Permian; MNHN.F.F63406 • 1 complete carapace, 52 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM1, GM2, GM3; Roadian; MNHN.F.F63656 • 15 valves; same locality as for preceding; ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 2 (GM6), Capitanian; Middle Permian; MNHN.F.F63486. Dimensions L= 503–2100 µm; H= 341–1467 µm (Fig. 5D). Description Carapace stocky (H/L=0.69–0.75) sub-rectangular in lateral outline; DB straight at LV; DB a little convex with weak overreach of RV above hinge-line; AB and PB quite equivalent with large radius of curvature, maximum of curvature around mid-H; VB nearly straight; LV overlaps RV all around free margins; presence of small hemi-circular ridge at mid-H of PB on both valves. Occurrence Samples GM1, GM2, and GM3, Quarry section, Williams Ranch [...]
Fig. 8 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section... more Fig. 8 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section, samples GM1 and GM4; Capitanian, MKCS1 section, samples 4 (GM5) and 2 (GM6)) of the Guadalupe Mountains (West Texas, USA). All specimens are temporarily housed in the collections of the Muséum national d'histoire naturelle, Paris, France (MNHN). A–B. Bairdia elcapitanensis Forel sp. nov. A. External view of a right valve, sample GM1 (MNHN.F.F63419). B. Holotype, external view of a right valve, sample GM1 (MNHN.F.F63420). – C. Bairdia cf. postacuta Chen, 1958, right lateral view of a carapace, sample GM1 (MNHN.F.F63421). – D. Bairdia sp. A, right lateral view of a carapace, sample GM1 (MNHN.F.F63422). – E. Bairdia sp. B, right lateral view of a carapace, sample GM1 (MNHN.F.F63423). – F. Bairdia sp. C, right lateral view of a carapace, sample GM1 (MNHN.F.F63424) – G. Bairdiacypris sp. B, right lateral view of a carapace, sample 2 (GM6) (MNHN.F.F63425). – H. Bairdiacypris sp. C, right...
Fig. 4 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section... more Fig. 4 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section, samples GM1, GM2, and GM4; Capitanian, MKCS1 section, samples 4 (GM5) and sample 2 (GM6)) of the Guadalupe Mountains (West Texas, USA). All specimens are temporarily housed in the collections of the Muséum national d'histoire naturelle, Paris, France (MNHN). A–C. Healdia mckittrickensis Crasquin sp. nov. A. Holotype, right lateral view of a carapace, sample 4 (GM5) (MNHN.F.F63365). B. Paratype, right lateral view of a carapace, sample GM1 (MNHN.F.F63366). C. External view of a right valve, sample 4 (GM5) (MNHN.F.F63367). – D–F. Healdia cutoffella Crasquin sp. nov. D. Holotype, right lateral view of a carapace, sample GM4 (MNHN.F.F63368). E. Paratype, external view of a left valve, sample GM1 (MNHN.F.F63369). F. External view of a left valve, sample GM4 (MNHN.F.F63370). –G –I. Sulcella mesopermiana Kozur, 1991. G. External view of a left valve, sample GM1 (MNHN.F.F63371). H. Left la...
Genus <i>Ceratobairdia</i> Sohn, 1954 TYPE SPECIES. — <i>Ceratobairdia dorsospi... more Genus <i>Ceratobairdia</i> Sohn, 1954 TYPE SPECIES. — <i>Ceratobairdia dorsospina</i> Sohn, 1954 by original designation.
Genus <i>Bairdia</i> McCoy, 1844 TYPE SPECIES. — <i>Bairdia curta</i> McC... more Genus <i>Bairdia</i> McCoy, 1844 TYPE SPECIES. — <i>Bairdia curta</i> McCoy, 1844 subsequently designated by Ulrich & Bassler (1923: 320).
<i>Acratia nagyvisnyoensis</i> ? Forel, 2013 (Fig. 5A, B) <i>Acratia nagyvisnyo... more <i>Acratia nagyvisnyoensis</i> ? Forel, 2013 (Fig. 5A, B) <i>Acratia nagyvisnyoensis</i> Forel <i>in</i> Forel <i>et al.</i>, 2013: 204, fig. 10K-O. MATERIAL EXAMINED. — Four complete carapaces and two broken carapaces. DIMENSIONS. — L= 629-682 µm; H= 308-373 µm. OCCURRENCES. — Bükk Mountains, Hungary, Late Permian (Forel <i>et al</i>. 2013);? Chaotian section, Sichuan Province, China. Wujiaping Formation, basal Wuchiapingian, Late Permian (this study, samples: 11 CHAO81, 11 CHAO84, see Table 1). REMARKS Our specimens are very similar to <i>A. nagyvisnyoensis</i> Forel, 2013 from the Late Permian of Hungary (Forel <i>et al.</i> 2013) but differ in having longer carapaces and a less arched DB.
FIG. 16. — Ostracods from Guadalupian-Lopingian boundary interval in South China: A, Kirkbya sp. ... more FIG. 16. — Ostracods from Guadalupian-Lopingian boundary interval in South China: A, Kirkbya sp. 1, right lateral view of complete carapace, P6M3757, sample 11CHAO172; B, Kirkbya sp. 2, left lateral view of left valve, P6M3758, sample 11CHAO164; C, Kirkbya sp. 3, left lateral view of left valve, P6M3759, sample 11CHAO166; D, Kirkbya sp. 4, left lateral view of left valve, P6M3760, sample 11CHAO158; E, Kirkbya sp. 5, left lateral view of left valve, P6M3776, sample 11CHAO88; F, G, Reviya cf. subsompongensis Chitnarin, 2008; F, right lateral view of right valve, P6M3762, sample 11CHAO167; G, right lateral view of right valve, P6M3763, sample 11CHAO166; H, Neoamphissites sp. 1, left lateral view of left valve, P6M3764, sample 11CHAO169; I, J, Kegelites sp. 1; I, left lateral view of complete carapace, P6M3765, sample 11CHAO81; J, left lateral view of complete carapace, P6M3766, sample 11CHAO99; K, L, Kindlella sp. 1; K, right lateral view of complete carapace, P6M3767, sample 11CHAO150...
FIG. 15. — Ostracods from Guadalupian in South China: A, B, Geffenina posterodorsospina? Chitnari... more FIG. 15. — Ostracods from Guadalupian in South China: A, B, Geffenina posterodorsospina? Chitnarin, 2012; A, left lateral view of complete carapace, P6M3742, 11CHAO80; B, right lateral view of complete carapace, P6M3743, 11CHAO80; C, Knoxitidae sp. 1, right lateral view of complete carapace, P6M3744, sample 11CHAO171; D, Knoxiella sp. 1, right lateral view of complete carapace, P6M3745, sample 11CHAO156; E, F, Knoxiella sp. 2; E, left lateral view of complete carapace, P6M3746, sample 11CHAO80; F, right sublateral view of complete carapace, P6M3747, sample 11CHAO80; G, Permoyoungiella? sp. 1, right lateral view of right valve, P6M3748, sample 11CHAO172; H, Kirkbyoidea sp. 1, left lateral view of left valve, P6M3749, sample 11CHAO166; I, Kirkbyoidea sp. 2, left lateral view of left valve, P6M3750, sample 11CHAO168; J, Kirkbyoidea sp. 3, right lateral view of right valve, P6M3751, sample 11CHAO167; K, L, Roundyella? sp. 1; K, left lateral view of left valve, P6M3752, sample 11CHAO168;...
Genus <i>Triassicindivisia</i> Crasquin n. gen. TYPE SPECIES. — <i>Triassicindi... more Genus <i>Triassicindivisia</i> Crasquin n. gen. TYPE SPECIES. — <i>Triassicindivisia tibetinella</i> Crasquin n. sp. (Fig. 5 J-M). ETYMOLOGY. — From the similarity with the Devonian genus <i>Indivisia</i> Zaspelova, 1954 (<i>in</i> Egorov 1954). TYPE HORIZON. — Tulong section, Southern Tibet. Sample 06Ti35, unit VI, Anisian, Middle Triassic. DISTRIBUTION. — Middle Smithian to Early Anisian, Tulong section, Southern Tibet. DIAGNOSIS. — A new Triassic palaeocopid genus with free margins laterally compressed, without observable sulcus, all surface smooth. REMARKS <i>Triassicindivisia</i> n. gen. is close to the Devonian <i>Indivisia</i>.
Genus <i>Hungarella</i> Méhes, 1911 TYPE SPECIES. — <i>Hungarella problematica&... more Genus <i>Hungarella</i> Méhes, 1911 TYPE SPECIES. — <i>Hungarella problematica</i> Méhes, 1911.
Genus <i>Bairdiacypris</i> Bradfield, 1935 TYPE SPECIES. — <i>Bairdiacypris del... more Genus <i>Bairdiacypris</i> Bradfield, 1935 TYPE SPECIES. — <i>Bairdiacypris deloi</i> Bradfield, 1935.
Genus <i>Bairdia</i> McCoy, 1844 TYPE SPECIES. — <i>Bairdia curta</i> McC... more Genus <i>Bairdia</i> McCoy, 1844 TYPE SPECIES. — <i>Bairdia curta</i> McCoy, 1844.
<i>Paraparchites texanus</i> Delo, 1930 Fig. 7C <i>Paraparchites humerosus</... more <i>Paraparchites texanus</i> Delo, 1930 Fig. 7C <i>Paraparchites humerosus</i> var. <i>texana</i> Delo, 1930: 153, pl. 12 fig. 1. <i>Paraparchites texanus</i> – Sohn 1971: A8, pl. 2 figs 1–2, 7–10, 13–15, with all previous synonyms therein. non <i>Paraparchites texanus</i> – Crasquin-Soleau &amp; Orchard 1994: 59, 60, pl. 4 fig. 12. — Yi 2004: pl. 2 fig. 13. Material examined USA • 1 complete carapace; Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 4 (GM5); Capitanian, Middle Permian; MNHN.F.F63403 • 2 complete carapaces; same locality as for preceding; Capitanian, Middle Permian; MNHN.F.F63485. Occurrence Menar and Tom Green Counties, Texas, USA, Kungurian (Arroyo Formation), Early Permian (Sohn 1971 and all references therein); sample 4 (GM5), MKCS 1 section, 'McKittrick Canyon' Member, Bell Canyon Formation, Capitanian; Guadalupe Mountains, West Texas, USA, Guadalupian, Middle Permian (this work).
<i>Glyptopleura</i> sp. Fig. 6M Material examined USA • 1 right valve; Guadalupe Moun... more <i>Glyptopleura</i> sp. Fig. 6M Material examined USA • 1 right valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F.F63395 • 7 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM1, GM2, and GM3; Roadian, Middle Permian; MNHN.F.F63482. Remarks A species of <i>Glyptopleura</i> with 6 thick ridges on the lateral surface, the upper two ridges are shorter than the others and end before PB. This species may be new, but the material is poorly preserved. So far, this species is the youngest representative of <i>Glyptopleura</i>. Occurrence Samples GM1, GM2, and GM3, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).
The impact of the late Devonian Hangenberg Event on ostracods is quantified for the first time fr... more The impact of the late Devonian Hangenberg Event on ostracods is quantified for the first time from newly acquired data from the Blue Snake section, Guizhou Province, South China. Ninety–eight species belonging to 31 genera are identified and figured. Four new species are described: Clavofabella? lanshella sp. nov., Sansabella gelaohensis sp. nov., Cytherellina caerulea sp. nov., Sulcella baisuzhena sp. nov. The ostracod associations from the Blue Snake section document a significant drop in specific diversity as well as major changes in taxonomic composition through the Hangenberg Event. We here report the reduction of the proportion of Palaeocopida and the increase in that of Podocopida between the latest Famennian and the Tournaisian. The specific extinction and renewal rates are estimated at 44% and 62%, respectively. The main factor of the post–crisis renewal of ostracod faunas in the Blue Snake section appears to be the progressive diversification of the family Bairdiidae and ...
<i>Ceratobairdia mescaleroella</i> Forel sp. nov. urn:lsid:zoobank.org:act: 52B30AEF-... more <i>Ceratobairdia mescaleroella</i> Forel sp. nov. urn:lsid:zoobank.org:act: 52B30AEF-EB47-4D12-A0BC-20EC095A2F6F Figs 5E, 8O–R, 9A–C Diagnosis A species of <i>Ceratobairdia</i> with three spines, two long and one short, along the dorsal margin of LV and the ventro-lateral ala not terminated by spine. Etymology From the tribe of Mescalero Apaches who inhabited parts of the Southwest US and Northwest Mexico. Material examined <b>Holotype</b> USA • left valve, (Fig. 8O); Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 4 (GM5); Capitanian, Middle Permian; MNHN.F.F63433. <b>Paratypes</b> USA • 1 left valve (Fig. 9A); Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 4 (GM5); Capitanian, Middle Permian; MNHN.F.F63435 (Fig. 8Q) • 1 right valve; same locality and sample as for preceding; Capitanian, Middle Permian; MNHN.F.F63437. <b>Additional material</b> USA • 1 left valve; Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 4 (GM5); Capitanian, Middle Permian; MNHN.F.F63434 • 1 left valve; same locality and sample as for preceding; Capitanian, Middle Permian; MNHN.F.F63436 • 1 left valve; same locality as for preceding but sample 2 (GM6); Capitanian, Middle Permian; MNHN.F.F63438 • 1 left valve; same locality and sample as for preceding; Capitanian, Middle Permian; MNHN.F.F63439 . • 13 valves; Guadalupe Mountains, West Texas, 'McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, samples 4 (GM5) and 2 (GM6); Capitanian, Middle Permian; MNHN.F.F63495. Dimensions See Fig. 5E. Description LV: stocky, subtriangular in lateral view with Hmax along DB and Lmax in lower half of H; dorsal margin uniformly arched with concave ADB and PDB, and apex of curvature with 3 equidistant spines; the 3 spines triangular in shape and thickest at base, central spine sub-vertical, external spines biggest, anterior one oriented anteriorly and posterior one orien [...]
<i>Microcheilinella</i> sp. 15 in Zazzali <i>et al</i>. 2015 Fig. 11M <... more <i>Microcheilinella</i> sp. 15 in Zazzali <i>et al</i>. 2015 Fig. 11M <i>Microcheilinella</i> sp. 15 – Zazzali <i>et al</i>. 2015: fig. 12m. Material examined USA • 1 complete carapace; Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 4 (GM5); Capitanian, Middle Permian; MNHN.F.F63466 • 1 complete carapace, 3 left valves; same locality as for preceding but samples 4 (GM5) and 2 (GM6); Capitanian, Middle Permian; MNHN.F.F63471. Occurrence Chaotian section, Sichuan, China, Wuchiapingian, Late Permian (Zazzali <i>et al.</i> 2015); samples 4 (GM5) and 2 (GM6), MKCS 1 section, 'McKittrick Canyon' Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work). Remarks The carapace of this species is subtriangular in lateral view, with large AB and strong overlap of LV on RV, hemi-circular furrows are visible on the medio-anterior and medio-posterior parts of the carapace in both valves.
<i>Paraparchites pecosensis</i> Crasquin sp. nov. urn:lsid:zoobank.org:act: E76693E7-... more <i>Paraparchites pecosensis</i> Crasquin sp. nov. urn:lsid:zoobank.org:act: E76693E7-FD8A-4E7B-9328-6D3248AC584F Figs 5D, 7D–H Diagnosis A species of <i>Paraparchites</i> with a small hemi-circular ridge at mid-H of PB on both valves and a weak overreach of RV above hinge-line. Etymology In reference to the Pecos River, West Texas, USA. Material examined <b>Holotype</b> USA • complete carapace, (Fig. 7D); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F.F63404. <b>Paratype</b> USA • 1 complete carapace, (Fig. 7H); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F.F63408. <b>Additional material</b> USA • 1 complete carapace; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F.F63405 • 1 right valve; same locality as for preceding; Roadian, Middle Permian; MNHN.F.F63407 • 1 right valve; Guadalupe Mountains, West Texas, ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample GM6; Capitanian, Middle Permian; MNHN.F.F63406 • 1 complete carapace, 52 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM1, GM2, GM3; Roadian; MNHN.F.F63656 • 15 valves; same locality as for preceding; ' McKittrick Canyon' Member, Bell Canyon Formation, MKCS1 section, sample 2 (GM6), Capitanian; Middle Permian; MNHN.F.F63486. Dimensions L= 503–2100 µm; H= 341–1467 µm (Fig. 5D). Description Carapace stocky (H/L=0.69–0.75) sub-rectangular in lateral outline; DB straight at LV; DB a little convex with weak overreach of RV above hinge-line; AB and PB quite equivalent with large radius of curvature, maximum of curvature around mid-H; VB nearly straight; LV overlaps RV all around free margins; presence of small hemi-circular ridge at mid-H of PB on both valves. Occurrence Samples GM1, GM2, and GM3, Quarry section, Williams Ranch [...]
Fig. 8 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section... more Fig. 8 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section, samples GM1 and GM4; Capitanian, MKCS1 section, samples 4 (GM5) and 2 (GM6)) of the Guadalupe Mountains (West Texas, USA). All specimens are temporarily housed in the collections of the Muséum national d'histoire naturelle, Paris, France (MNHN). A–B. Bairdia elcapitanensis Forel sp. nov. A. External view of a right valve, sample GM1 (MNHN.F.F63419). B. Holotype, external view of a right valve, sample GM1 (MNHN.F.F63420). – C. Bairdia cf. postacuta Chen, 1958, right lateral view of a carapace, sample GM1 (MNHN.F.F63421). – D. Bairdia sp. A, right lateral view of a carapace, sample GM1 (MNHN.F.F63422). – E. Bairdia sp. B, right lateral view of a carapace, sample GM1 (MNHN.F.F63423). – F. Bairdia sp. C, right lateral view of a carapace, sample GM1 (MNHN.F.F63424) – G. Bairdiacypris sp. B, right lateral view of a carapace, sample 2 (GM6) (MNHN.F.F63425). – H. Bairdiacypris sp. C, right...
Fig. 4 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section... more Fig. 4 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section, samples GM1, GM2, and GM4; Capitanian, MKCS1 section, samples 4 (GM5) and sample 2 (GM6)) of the Guadalupe Mountains (West Texas, USA). All specimens are temporarily housed in the collections of the Muséum national d'histoire naturelle, Paris, France (MNHN). A–C. Healdia mckittrickensis Crasquin sp. nov. A. Holotype, right lateral view of a carapace, sample 4 (GM5) (MNHN.F.F63365). B. Paratype, right lateral view of a carapace, sample GM1 (MNHN.F.F63366). C. External view of a right valve, sample 4 (GM5) (MNHN.F.F63367). – D–F. Healdia cutoffella Crasquin sp. nov. D. Holotype, right lateral view of a carapace, sample GM4 (MNHN.F.F63368). E. Paratype, external view of a left valve, sample GM1 (MNHN.F.F63369). F. External view of a left valve, sample GM4 (MNHN.F.F63370). –G –I. Sulcella mesopermiana Kozur, 1991. G. External view of a left valve, sample GM1 (MNHN.F.F63371). H. Left la...
Genus <i>Ceratobairdia</i> Sohn, 1954 TYPE SPECIES. — <i>Ceratobairdia dorsospi... more Genus <i>Ceratobairdia</i> Sohn, 1954 TYPE SPECIES. — <i>Ceratobairdia dorsospina</i> Sohn, 1954 by original designation.
Genus <i>Bairdia</i> McCoy, 1844 TYPE SPECIES. — <i>Bairdia curta</i> McC... more Genus <i>Bairdia</i> McCoy, 1844 TYPE SPECIES. — <i>Bairdia curta</i> McCoy, 1844 subsequently designated by Ulrich & Bassler (1923: 320).
<i>Acratia nagyvisnyoensis</i> ? Forel, 2013 (Fig. 5A, B) <i>Acratia nagyvisnyo... more <i>Acratia nagyvisnyoensis</i> ? Forel, 2013 (Fig. 5A, B) <i>Acratia nagyvisnyoensis</i> Forel <i>in</i> Forel <i>et al.</i>, 2013: 204, fig. 10K-O. MATERIAL EXAMINED. — Four complete carapaces and two broken carapaces. DIMENSIONS. — L= 629-682 µm; H= 308-373 µm. OCCURRENCES. — Bükk Mountains, Hungary, Late Permian (Forel <i>et al</i>. 2013);? Chaotian section, Sichuan Province, China. Wujiaping Formation, basal Wuchiapingian, Late Permian (this study, samples: 11 CHAO81, 11 CHAO84, see Table 1). REMARKS Our specimens are very similar to <i>A. nagyvisnyoensis</i> Forel, 2013 from the Late Permian of Hungary (Forel <i>et al.</i> 2013) but differ in having longer carapaces and a less arched DB.
FIG. 16. — Ostracods from Guadalupian-Lopingian boundary interval in South China: A, Kirkbya sp. ... more FIG. 16. — Ostracods from Guadalupian-Lopingian boundary interval in South China: A, Kirkbya sp. 1, right lateral view of complete carapace, P6M3757, sample 11CHAO172; B, Kirkbya sp. 2, left lateral view of left valve, P6M3758, sample 11CHAO164; C, Kirkbya sp. 3, left lateral view of left valve, P6M3759, sample 11CHAO166; D, Kirkbya sp. 4, left lateral view of left valve, P6M3760, sample 11CHAO158; E, Kirkbya sp. 5, left lateral view of left valve, P6M3776, sample 11CHAO88; F, G, Reviya cf. subsompongensis Chitnarin, 2008; F, right lateral view of right valve, P6M3762, sample 11CHAO167; G, right lateral view of right valve, P6M3763, sample 11CHAO166; H, Neoamphissites sp. 1, left lateral view of left valve, P6M3764, sample 11CHAO169; I, J, Kegelites sp. 1; I, left lateral view of complete carapace, P6M3765, sample 11CHAO81; J, left lateral view of complete carapace, P6M3766, sample 11CHAO99; K, L, Kindlella sp. 1; K, right lateral view of complete carapace, P6M3767, sample 11CHAO150...
FIG. 15. — Ostracods from Guadalupian in South China: A, B, Geffenina posterodorsospina? Chitnari... more FIG. 15. — Ostracods from Guadalupian in South China: A, B, Geffenina posterodorsospina? Chitnarin, 2012; A, left lateral view of complete carapace, P6M3742, 11CHAO80; B, right lateral view of complete carapace, P6M3743, 11CHAO80; C, Knoxitidae sp. 1, right lateral view of complete carapace, P6M3744, sample 11CHAO171; D, Knoxiella sp. 1, right lateral view of complete carapace, P6M3745, sample 11CHAO156; E, F, Knoxiella sp. 2; E, left lateral view of complete carapace, P6M3746, sample 11CHAO80; F, right sublateral view of complete carapace, P6M3747, sample 11CHAO80; G, Permoyoungiella? sp. 1, right lateral view of right valve, P6M3748, sample 11CHAO172; H, Kirkbyoidea sp. 1, left lateral view of left valve, P6M3749, sample 11CHAO166; I, Kirkbyoidea sp. 2, left lateral view of left valve, P6M3750, sample 11CHAO168; J, Kirkbyoidea sp. 3, right lateral view of right valve, P6M3751, sample 11CHAO167; K, L, Roundyella? sp. 1; K, left lateral view of left valve, P6M3752, sample 11CHAO168;...
Genus <i>Triassicindivisia</i> Crasquin n. gen. TYPE SPECIES. — <i>Triassicindi... more Genus <i>Triassicindivisia</i> Crasquin n. gen. TYPE SPECIES. — <i>Triassicindivisia tibetinella</i> Crasquin n. sp. (Fig. 5 J-M). ETYMOLOGY. — From the similarity with the Devonian genus <i>Indivisia</i> Zaspelova, 1954 (<i>in</i> Egorov 1954). TYPE HORIZON. — Tulong section, Southern Tibet. Sample 06Ti35, unit VI, Anisian, Middle Triassic. DISTRIBUTION. — Middle Smithian to Early Anisian, Tulong section, Southern Tibet. DIAGNOSIS. — A new Triassic palaeocopid genus with free margins laterally compressed, without observable sulcus, all surface smooth. REMARKS <i>Triassicindivisia</i> n. gen. is close to the Devonian <i>Indivisia</i>.
Genus <i>Hungarella</i> Méhes, 1911 TYPE SPECIES. — <i>Hungarella problematica&... more Genus <i>Hungarella</i> Méhes, 1911 TYPE SPECIES. — <i>Hungarella problematica</i> Méhes, 1911.
Genus <i>Bairdiacypris</i> Bradfield, 1935 TYPE SPECIES. — <i>Bairdiacypris del... more Genus <i>Bairdiacypris</i> Bradfield, 1935 TYPE SPECIES. — <i>Bairdiacypris deloi</i> Bradfield, 1935.
Genus <i>Bairdia</i> McCoy, 1844 TYPE SPECIES. — <i>Bairdia curta</i> McC... more Genus <i>Bairdia</i> McCoy, 1844 TYPE SPECIES. — <i>Bairdia curta</i> McCoy, 1844.
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