Results 41 to 50 of about 338 (111)

Functional anatomy, jaw mechanisms, and feeding behavior of Dunkleosteus terrelli (Placodermi, Arthrodira)

open access: yesThe Anatomical Record
Abstract The comparative and functional anatomy of the cleaver‐like jaws of the Late Devonian arthrodire Dunkleosteus terrelli remains poorly understood, despite significant advances in our understanding of arthrodire anatomy. Here, we re‐investigate the jaw morphology of
Russell K. Engelman   +4 more
openaire   +1 more source

Some Aspects of Evolutionary Theory [PDF]

open access: yes, 1942
The present contribution is not a unified account, but is a series of essays dealing with some aspects, but is a series of essays dealing with some aspects of evolutionary theory.https://scholars.fhsu.edu/fort_hays_studies_series/1049/thumbnail ...
Robertson, George M.
core   +1 more source

Supplementary materials for 'A tetrapod fauna from within the Devonian Antarctic Circle' [PDF]

open access: yes, 2009
Until now, all known fossils of tetrapods (limbed vertebrates with digits) and near-tetrapods (such as Elpistostege, Tiktaalik, and Panderichthys) from the Devonian period have come from localities in tropical to subtropical paleolatitudes. Most are from
Ahlberg, Per Erik Ahlberg   +1 more
core   +2 more sources

The ventral armor and feeding biomechanics of Glyptaspis verrucosa Newberry, a placoderm from the Fammenian Cleveland Shale. American Museum novitates ; no. 2655 [PDF]

open access: yes, 1978
12 p. : ill. ; 26 cm.Includes bibliographical references (p. 10-12)."The four plates that constitute the sole known remains of Glyptaspis verrucosa Newberry are identified and described.
Boylan, John C., Murphy, Paula A.
core  

A Review of The Mandible [PDF]

open access: yes, 2020
A Review of The Mandible by Emily Hill The mandible is one of the 22 bones in the human skull. This paper aims to encapsulate the basic features of the human mandible while also addressing the evolution and morphological mandibular variation between ...
Hill, Emily
core   +1 more source

Redescription of a Middle Devonian placoderm from Manitoba and comments on the polyphyly of Eastmanosteus (Arthrodira: Eubrachythoraci)

open access: yesJournal of Systematic Palaeontology
Arthrodires are the most common and diverse placoderms, an extinct group of early jawed vertebrates. Although commonly found, numerous taxa remain poorly known, thereby complicating the establishment of their taxonomic affinities. An excellent example of this is the genus Eastmanosteus: originally assigned to the wastebasket Dinichthys, it now ...
Jobbins, Melina   +3 more
openaire   +1 more source

Contribuciones al conocimiento de la fauna ictiológica fósil de España (III) [PDF]

open access: yes, 1972
Se dan a conocer en este trabajo, algunas novedades para la fauna ictiológica fósil de España, tales como el hallazgo del Glyptaspis en el Devónico de la provincia de León.Se describe, proveniente del Mioceno de Banyeres (Cataluña), el Diplodus annularis
BAUZÁ, J.
core   +1 more source

Description d'une nouvelle espèce de poisson placoderme du Dévonien appartenant au genre Groenlandaspis et sa position phylogénétique [PDF]

open access: yes, 2019
RÉSUMÉ: Les placodermes, ou poissons cuirassés, étaient le groupe de poissons le plus diversifié durant le Dévonien, il y a 419 à 359 millions d'années.
Deschênes, Cynthia
core  

New finds of fishes in the lower uppermost famennian (upper devonian) of central russia and habitats of the khovanshchinian vertebrate assemblages [PDF]

open access: yes, 2018
© 2018 Authors. New vertebrate finds from the Khovanshchinian Regional Stage (lower uppermost Famennian, Upper Devonian) made an important contribution to our knowledge of the composition and distribution of vertebrate assemblages in Central Russia.

core  

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