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Article
Acanthodian dental development and the origin of gnathostome dentitions
Chondrichthyan dentitions are conventionally interpreted to reflect the ancestral gnathostome condition but interpretations of osteichthyan dental evolution in this light have proved unsuccessful, perhaps beca...
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Article
Open AccessA large Middle Devonian eubrachythoracid ‘placoderm’ (Arthrodira) jaw from northern Gondwana
For the understanding of the evolution of jawed vertebrates and jaws and teeth, ‘placoderms’ are crucial as they exhibit an impressive morphological disparity associated with the early stages of this process. ...
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Article
Open AccessA symmoriiform from the Late Devonian of Morocco demonstrates a derived jaw function in ancient chondrichthyans
The Palaeozoic record of chondrichthyans (sharks, rays, chimaeras, extinct relatives) and thus our knowledge of their anatomy and functional morphology is poor because of their predominantly cartilaginous skel...
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Article
A new large tetrapodomorph sarcopterygian from the Late Devonian of Iran
Remains of a large sarcopterygian were collected in the Middle-Late Devonian Zarand Formation of Southeastern Iran. These remains consist of incomplete jaw bones of uncertain identification, preserved in a den...
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Article
Development of teeth and jaws in the earliest jawed vertebrates
Synchrotron radiation X-ray tomographic microscopy of a developmental series of Compagopiscis croucheri (Arthrodira) indicates that placoderms had true teeth, but that tooth and jaw development was not developmen...
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Article
Controls on Devonian hemi-pelagic limestone deposition analyzed on cephalopod ridge to slope sections, Eastern Anti-Atlas, Morocco
The hemi-pelagic Tafilalt Ridge separating the Maider Basin from the Tafilalt Basin developed progressively from an Early Devonian homoclinal ramp, through a Middle Devonian ramp-slope stage of moderate topogr...
