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- Acanthothoraci (spine chests) is an extinct group of chimaera-like placoderms who were closely related to the rhenanid placoderms. Superficially, the acanthoracids resembled scaly chimaeras, or (relatively) heavily armored ptyctodonts. They were distinguished from chimaeras by the presence of large scales and plates, a pair of large spines that emanate from their chests (thus, the order's name), tooth-like beak plates, and the typical bone-enhanced placoderm eyeball. They were distinguished from other placoderms due to differences in the anatomy of their skulls, and due to patterns on the skull plates and thoracic plates that are unique to this order. (en)
- Gli acantotoraci (Acanthothoraci) sono un piccolo gruppo di pesci estinti, appartenenti ai placodermi. Vissero esclusivamente nel Devoniano inferiore (395-380 milioni di anni fa), i loro resti sono stati rinvenuti in quasi tutto il mondo. (it)
- Acanthothoraci – rząd wymarłych żuchwowców należących do ryb pancernych. Żyły w dewonie (około 395–380 milionów lat temu). Szczątki tych ryb znaleziono na całym świecie. Wyglądem przypominały dzisiejsze chimery. Dzielą się na rodziny:
* ,
* . (pl)
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- 10057 (xsd:nonNegativeInteger)
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- Early to Middle Devonian (en)
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- Weejasperaspis gavini, Murrindalaspis wallacei & Brindabellaspis stensioi (en)
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- *Acanthothoraciformes (en)
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- Acanthothoraci (spine chests) is an extinct group of chimaera-like placoderms who were closely related to the rhenanid placoderms. Superficially, the acanthoracids resembled scaly chimaeras, or (relatively) heavily armored ptyctodonts. They were distinguished from chimaeras by the presence of large scales and plates, a pair of large spines that emanate from their chests (thus, the order's name), tooth-like beak plates, and the typical bone-enhanced placoderm eyeball. They were distinguished from other placoderms due to differences in the anatomy of their skulls, and due to patterns on the skull plates and thoracic plates that are unique to this order. (en)
- Gli acantotoraci (Acanthothoraci) sono un piccolo gruppo di pesci estinti, appartenenti ai placodermi. Vissero esclusivamente nel Devoniano inferiore (395-380 milioni di anni fa), i loro resti sono stati rinvenuti in quasi tutto il mondo. (it)
- Acanthothoraci – rząd wymarłych żuchwowców należących do ryb pancernych. Żyły w dewonie (około 395–380 milionów lat temu). Szczątki tych ryb znaleziono na całym świecie. Wyglądem przypominały dzisiejsze chimery. Dzielą się na rodziny:
* ,
* . (pl)
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- Acanthothoraci (en)
- Acanthothoraci (it)
- Acanthothoraci (pl)
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