The Anhangueridae are a clade of toothed pterodactyloid pterosaurs, known from their characteristic anteriorly expanded premaxillae and conspicuous rostral sagittal premaxillary and dentary crests. Most known anhanguerids come from the... more
The Anhangueridae are a clade of toothed pterodactyloid pterosaurs, known from their characteristic anteriorly expanded premaxillae and conspicuous rostral sagittal premaxillary and dentary crests. Most known anhanguerids come from the Lower Cretaceous Romualdo Formation within the Araripe Basin of northeast Brazil. With four currently valid genera and several specimens referred to the clade, anhanguerids are the most abundant and diverse tetrapod group in the Romualdo Formation. However, some studies suggest this diversity may be overestimated, as many taxa have been diagnosed based on subtle differences in their premaxillary crests, a structure argued to be either ontogenetically variable or sexually dimorphic. Here we describe an anterior fragment of a gracile pterosaur rostrum that possesses the single diagnostic feature of Anhanguera (fifth and sixth pairs of dental alveoli smaller than the fourth and seventh), but lacks a sagittal crest. The affinities of the new fossil among other toothed pterosaurs were tested through both cladistic and geometric morphometric approaches, which allow referral of the new specimen to Anhanguera. The absence of a crest in the new specimen of Anhanguera suggests that this structure varies in terms of ontogeny and/or sex, and that perhaps it was influenced by sexual selection.
Research Interests:
The Anhangueridae are a clade of toothed pterodactyloid pterosaurs, known from their characteristic anteriorly expanded premaxillae and conspicuous rostral sagittal premaxillary and dentary crests. Most known anhanguerids come from the... more
The Anhangueridae are a clade of toothed pterodactyloid pterosaurs, known from their characteristic anteriorly expanded premaxillae and conspicuous rostral sagittal premaxillary and dentary crests. Most known anhanguerids come from the Lower Cretaceous Romualdo Formation within the Araripe Basin of northeast Brazil. With four currently valid genera and several specimens referred to the clade, anhanguerids are the most abundant and diverse tetrapod group in the Romualdo Formation. However, some studies suggest this diversity may be overestimated, as many taxa have been diagnosed based on subtle differences in their premaxillary crests, a structure argued to be either ontogenetically variable or sexually dimorphic. Here we describe an anterior fragment of a gracile pterosaur rostrum that possesses the single diagnostic feature of Anhanguera (fifth and sixth pairs of dental alveoli smaller than the fourth and seventh), but lacks a sagittal crest. The affinities of the new fossil among other toothed pterosaurs were tested through both cladistic and geometric morphometric approaches, which allow referral of the new specimen to Anhanguera. The absence of a crest in the new specimen of Anhanguera suggests that this structure varies in terms of ontogeny and/or sex, and that perhaps it was influenced by sexual selection.
Research Interests:
Mawsoniidae e uma familia de peixes sarcopterigios originados no Triassico Medio e junto a outros sarcopeterigios sao conhecidos popularmente como celacantos. Ocorrencias desse grupo nas bacias sedimentares do Nordeste estao associadas... more
Mawsoniidae e uma familia de peixes sarcopterigios originados no Triassico Medio e junto a outros sarcopeterigios sao conhecidos popularmente como celacantos. Ocorrencias desse grupo nas bacias sedimentares do Nordeste estao associadas aos ambientes fluviais, lacustres e com influencia marinha durante os estagios iniciais da fragmentacao do Gondwana. Seus registros mostram uma intima relacao entre as paleoictiofaunas do Brasil e da Africa no inicio da formacao do Oceano Atlântico. Quatro especies sao encontradas nas bacias sedimentares brasileiras, distribuidas nos generos Mawsonia, Axelrodichthys e Parnaibaia, com registro de ossos de crânio e pos-crânio, datados do Jurassico Superior ao Cretaceo Superior. O objetivo da pesquisa foi apresentar o estado da arte sobre os celacantiformes presentes em onze bacias sedimentares do Nordeste do Brasil.
Research Interests:
Research Interests:
Research Interests:
This research describes a pterosaur remain from the Aptian/Albian Romualdo Formation collected on a new potential site at the southernmost portion of the Araripe Basin. The specimen (DGEO-CTG-UFPE 7516) consists of three-dimensionally... more
This research describes a pterosaur remain from the Aptian/Albian Romualdo Formation collected on a new potential site at the southernmost portion of the Araripe Basin. The specimen (DGEO-CTG-UFPE 7516) consists of three-dimensionally preserved ulna that shows morphological affinities with the Pteranodontoidea and is tentatively referred to Anhangueridae because of the presence of a well-developed ventral ridge on the distal end. Histological features suggest it was an ontogenetically developed individual and the estimated wingspan ranges from 4.4 m to 4.6 m. This is the first record of this group for the Exu municipality, broadening the horizons of occurrence of pterosaurs in new localities within the Araripe Basin.
Research Interests:
Aqui sao apresentados antigos e novos sitios fossiliferos da Formacao Romualdo, Albiano da Bacia do Araripe, no municipio de Exu, Pernambuco, Nordeste do Brasil, com o levantamento da sua diversidade fossilifera, com enfase em... more
Aqui sao apresentados antigos e novos sitios fossiliferos da Formacao Romualdo, Albiano da Bacia do Araripe, no municipio de Exu, Pernambuco, Nordeste do Brasil, com o levantamento da sua diversidade fossilifera, com enfase em paleovertebrados. Foram estudadas sete localidades da porcao sudoeste da Bacia Sedimentar do Araripe, sendo identificados 16 taxons de paleovertebrados, incluindo peixes: Vinctifer comptoni, Rhacolepis buccalis, Calamopleurus cylindricus, Cladocyclus gardneri, Neoproscinetes penalvai, Paraelops cearenses, Tharrhias araripis, Notelops brama, Araripelepdotes temnurus, Brannerion sp. e Beurlenichthys ouricuriensis; pterossauros Anhangueridae e quelonios (Araripemys barretoi). A Paleofauna de vertebrados da Formacao Romualdo vem sendo estudada desde 1800, e reconhecida internacionalmente como Fossillagerstatte. Porem, a regiao pernambucana da bacia carece de estudos sistematicos, quando comparada com a regiao cearense, dai vem a necessidade de registrar as ocorren...
Research Interests:
Agradecemos ao Conselho Nacional de Desenvolvimento Cientifico e Tecnologico do Brasil/CNPq, pela bolsa de produtividade de pesquisa 303071/2014-1 e o projeto de pesquisa 401748/2010, a Pro-reitora de Extensao- PROEXT-UFPE e a FUNCULTURA,... more
Agradecemos ao Conselho Nacional de Desenvolvimento Cientifico e Tecnologico do Brasil/CNPq, pela bolsa de produtividade de pesquisa 303071/2014-1 e o projeto de pesquisa 401748/2010, a Pro-reitora de Extensao- PROEXT-UFPE e a FUNCULTURA, Processo 0756/2014. Sinceros agradecimentos tambem sao devidos a prefeitura do Municipio de Exu, ao Departamento Nacional de Producao Mineral-DNPM e ao Sindicato da Industria do Gesso de Pernambuco/SINDUGESSO, pelo apoio no desenvolvimento da pesquisa.
Research Interests:
Here we describe a new record of a sauropod dinosaur from the Lower Cretaceous (Hauterivian eBarremian) Rio Piranhas Formation, Sousa Basin, NE Brazil. Dinosaur fossil bones from this deposit were unknown until now. Thus, the discovery of... more
Here we describe a new record of a sauropod dinosaur from the Lower Cretaceous (Hauterivian eBarremian) Rio Piranhas Formation, Sousa Basin, NE Brazil. Dinosaur fossil bones from this deposit were unknown until now. Thus, the discovery of a sauropod fibula from this locality is highly significant. Our discovery represents an indeterminate titanosaur and the earliest stratigraphic occurrence of this group in central Gondwana. When compared to chronocorrelate titanosaur trackmakers of this geological unit, this fossil specimen appears substantially smaller. Histological analysis of the fibula suggests that this is a relatively young individual (approximately 40e50% adult body size) that had passed its most rapid phase of early juvenile growth, but had not yet attained somatic maturity. Thus, the fibula recovered is from a young individual rather than from a small-bodied adult titanosaur.
Research Interests:
The Museu de Ciências Naturais e de História Barra do Jardim was created on October 27, 2001 and has the mission of rescuing, preserve and promoting local culture. It is located in the urban and historical area of the municipality of... more
The Museu de Ciências Naturais e de História Barra do Jardim was created on October 27, 2001 and has the mission of rescuing, preserve and promoting local culture. It is located in the urban and historical area of the municipality of Jardim and belongs to the Francisco de Lima Botelho Foundation. The geological importance of the municipality is widely known in the context of the Araripe Sedimentary Basin for the classic outcrops of the Romualdo Formation, such as Sobradinho Site, and for the reasonable presence of fossils. Despite this, the municipality is not included in territory of the Araripe Global Geopark, but still has the support of various segments of society to preserve and promote its historical and natural heritage, the fossils of the Araripe Sedimentary Basin. This work
aims to present the paleontological collection of the museum, which currently has 375 specimens cataloged with data on geological
and geographical origin, specific taxonomic identification or at higher levels (phyla, genus or family), and in many cases, collector and
date of collection. The paleontological collection consists mostly of fish (62.2%), followed by plants (10%), reptiles (7.7%), in addition
to ichnofossils (8.2%), arthropods (5.8%), molluscs (4%) and others (3%), including the crustacean holotype Araripenaeus timidus.
This collection reflects the fossiliferous diversity of the Romualdo Formation, coming from 11 sites in the municipality of Jardim,
including collections from Avenida Wilson Roriz, in the city center. The collection began with the clarification of the population on the
scientific and cultural value of natural heritage, and an example of heritage education, by strengthening the relationship of people with
their cultural heritage. The museum houses not only fossil specimens for research that are relevant to the knowledge of paleontology in
the Araripe Sedimentary Basin, but also constitutes a place of regional public visitation with an educational, cultural and tourist effect.
aims to present the paleontological collection of the museum, which currently has 375 specimens cataloged with data on geological
and geographical origin, specific taxonomic identification or at higher levels (phyla, genus or family), and in many cases, collector and
date of collection. The paleontological collection consists mostly of fish (62.2%), followed by plants (10%), reptiles (7.7%), in addition
to ichnofossils (8.2%), arthropods (5.8%), molluscs (4%) and others (3%), including the crustacean holotype Araripenaeus timidus.
This collection reflects the fossiliferous diversity of the Romualdo Formation, coming from 11 sites in the municipality of Jardim,
including collections from Avenida Wilson Roriz, in the city center. The collection began with the clarification of the population on the
scientific and cultural value of natural heritage, and an example of heritage education, by strengthening the relationship of people with
their cultural heritage. The museum houses not only fossil specimens for research that are relevant to the knowledge of paleontology in
the Araripe Sedimentary Basin, but also constitutes a place of regional public visitation with an educational, cultural and tourist effect.
Research Interests:
Mawsoniidae are the sarcopterygians fish originated in the medium Triassic and along with other sarcopterygians are popularly known as coelacanth. The occurrences of this group in brazilian sedimentary basins of Northeast are associated... more
Mawsoniidae are the sarcopterygians fish originated in the medium Triassic and along with other sarcopterygians are popularly known as coelacanth. The occurrences of this group in brazilian sedimentary basins of Northeast are associated with fluvial, lacustrine environments with marine influence during the early stages of the separation of Gond-wana. Their records demonstrate an intimate relationship between the paleoictiofaunas of Brazil and Africa and the beginning of the formation of the South Atlantic Ocean. Four species are found in the brazilian sedimentary basins, distributed in the genera Mawsonia, Axelrodichthys e Parnaibaia, with record of cranial and pos-cranial bones from the Upper Jurassic and Upper Cretaceous. We aim to present the state of art about the mawsoniideos found in eleven sedimentary basins of Northeast Brazil through bibliographical surveys.
Research Interests:
This study describes two pterosaur specimens from the Romualdo Formation (Lower Cretaceous, Aptian–Albian), Araripe Basin, from the municipalities of Araripina and Exu of Pernambuco State, Northeast Brazil. Specimen DGEO-CTG-UFPE 7571... more
This study describes two pterosaur specimens from the Romualdo Formation (Lower Cretaceous, Aptian–Albian), Araripe Basin, from the municipalities of Araripina and Exu of Pernambuco State, Northeast Brazil. Specimen DGEO-CTG-UFPE 7571 comprises the distal ends of radius and ulna, the carpal complex, sesamoid bones and the proximal end of metacarpals III and IV. The bones were found articulated and exceptionally well-preserved. This specimen had a wingspan between 5.5 and 5.8 meters and is tentatively referred to as Anhangueridae due to the presence of a ventral crest on the distal end of the ulna and because only metacarpals III and IV reach the carpus. Histological analysis indicates it was sub-adult. The other specimen, DGEOCTG- UFPE 7781, is identified as Pterodactyloidea indet. and consists of proximal fragments of the first three digits of the manus and their respective unguals, and fragments of the fourth digit. This is the first pterosaur reported for the municipality of Araripina, and is one of the few records with a well-defined provenance.
Research Interests:
Here are new and old inventory of fossiliferous sites in the Romualdo Formation, Albian of the Araripe Basin, in the municipality of Exu, Pernambuco, Northeast of Brazil, with the survey of its fossiliferous diversity, with emphasis on... more
Here are new and old inventory of fossiliferous sites in the Romualdo Formation, Albian of the Araripe Basin, in the municipality of Exu, Pernambuco, Northeast of Brazil, with the survey of its fossiliferous diversity, with emphasis on paleovertebrates. Seven localities were studied, and 16 taxa of paleovertebrates were identified, including fishes: Vinctifer comptoni, Rhacolepis buccalis, Calamopleurus cylindricus, Cladocyclus gardneri, Neoproscinetes penalvai, Paraelops
cearenses, Tharrhias araripis, Notelops brama, Araripelepdotes temnurus, Brannerion sp. e Beurlenichthys ouricuriensis; new occurrences of pterosaurs Anhangueridae and; chelonians (Araripemys barretoi). The Romualdo Formation has been studied since 1800 and it is internationally recognized as Fossillagerstätte. However, the Pernambuco region of the Araripe Basin lacks systematic studies when compared to the region of Ceará, which indicates the need to register the
occurrence of fossiliferous sites and diversity, contributing to the knowledge of vertebrate paleontology in the southwest portion of the Araripe Basin and expanding the paleontological collections of the state of Pernambuco.
cearenses, Tharrhias araripis, Notelops brama, Araripelepdotes temnurus, Brannerion sp. e Beurlenichthys ouricuriensis; new occurrences of pterosaurs Anhangueridae and; chelonians (Araripemys barretoi). The Romualdo Formation has been studied since 1800 and it is internationally recognized as Fossillagerstätte. However, the Pernambuco region of the Araripe Basin lacks systematic studies when compared to the region of Ceará, which indicates the need to register the
occurrence of fossiliferous sites and diversity, contributing to the knowledge of vertebrate paleontology in the southwest portion of the Araripe Basin and expanding the paleontological collections of the state of Pernambuco.
Research Interests:
RESUMO Este trabalho descreve um osso isolado de pterossauro da Formação Romualdo (Aptiano / Albiano) coletado em um novo sitío fossilífero na porção sudeste da Bacia do Araripe. O espécime (DGEO-CTG-UFPE 7516) consiste em uma ulna... more
RESUMO Este trabalho descreve um osso isolado de pterossauro da Formação Romualdo (Aptiano / Albiano) coletado em um novo sitío fossilífero na porção sudeste da Bacia do Araripe. O espécime (DGEO-CTG-UFPE 7516) consiste em uma ulna preservada em três dimensões que apresenta semelhanças morfológicas com os Pteranodontoidea e é tentativamente referido a Anhangueridae por causa da presença de uma crista ventral bem desenvolvida na extremidade distal. As características histológicas sugerem que era um indivíduo ontogeneticamente desenvolvido e os intervalos estimados da envergadura variam entre 4,4 m para 4,6 m. Este é o primeiro registro desse grupo para o município Exu, ampliando os horizontes da ocorrência de pterossauros para novas localidades na Bacia do Araripe. ABSTRACT This research describes a pterosaur remain from the Aptian/Albian Romualdo Formation collected on a new potential site at the southernmost portion of the Araripe Basin. The specimen (DGEO-CTG-UFPE 7516) consists of three-dimensionally preserved ulna that shows morphological affinities with the Pteranodontoidea and is tentatively referred to Anhangueridae because of the presence of a well-developed ventral ridge on the distal end. Histological features suggest it was an ontogenetically developed individual and the estimated wingspan ranges from 4.4 m to 4.6 m. This is the first record of this group for the Exu municipality, broadening the horizons of occurrence of pterosaurs in new localities within the Araripe Basin.