Results 51 to 60 of about 643 (178)

The internal cranial anatomy of Romundina stellina Ørvig, 1975 (Vertebrata, Placodermi, Acanthothoraci) and the origin of jawed vertebrates-Anatomical atlas of a primitive gnathostome.

PLoS ONE, 2017
Placoderms are considered as the first jawed vertebrates and constitute a paraphyletic group in the stem-gnathostome grade. The acanthothoracid placoderms are among the phylogenetically most basal and morphologically primitive gnathostomes, but their ...
Vincent Dupret, Sophie Sanchez, Daniel Goujet, Per Erik Ahlberg   +3 more
doaj   +1 more source

Endocranial morphology of the petalichthyid placoderm Ellopetalichthys scheii from the Middle Devonian of Arctic Canada, with remarks on the inner ear and neck joint morphology of placoderms

, 2020
Petalichthyid and “acanthothoracid” placoderms have taken pivotal positionsin the debate on placoderm—and, by extension, jawed vertebrate—relationships owing to perceived similarities with the jawless vertebrates.
Maria Grace Burton, Friedman, Matt, Marco Castiello, Castiello, Marco,, Brazeau, Martin D.,, Jerve, Anna,, Burton, Maria Grace, Anna Jerve, Brazeau, Martin D., Matt Friedman, Burton, Maria Grace,, Brazeau, Martin, Jerve, Anna, Martin D. Brazeau, Castiello, Marco, Friedman, Matt,   +15 more
core   +1 more source

Reconstruction of the immature placoderms and diagrammatic model of the Strud nursery.

, 2016
Immature placoderms (from top to bottom) Turrisaspis strudensis (left lateral view), Grossilepis rikiki (dorsal view), Phyllolepis undulata (dorsal view).
Sébastien Olive (3072225), Gaël Clément (117344), Edward B. Daeschler (3072228), Vincent Dupret (382346)   +3 more
core   +1 more source

Late emsian placoderms of Belarus [PDF]

, 2015
Plax, D. P.
core   +3 more sources

Evidence for Placoderms from the Mid-Palaeozoic Sandon Beds of North-western New South Wales, Australia

, 2023
Armoured jawed fishes known as placoderms are a well-documented group with a fossil record spanning the Silurian to end-Devonian. They have a global distribution and a marked diversity within Devonian deposits of Australia. Despite their notable Gondwanan
Long, John A, Bicknell, Russell D C, Smith, Patrick D, Hart, Lachlan J, Trinajstic, Kate M   +4 more
core  

New finds of fishes in the lower uppermost Famennian (Upper Devonian) of Сentral Russia and habitats of the Khovanshchinian vertebrate assemblages [PDF]

Estonian Journal of Earth Sciences, 2018
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.
Oleg A. Lebedev, Galina V. Zakharenko, Vladimir V. Silantiev, Irina O. Evdokimova   +3 more
doaj   +1 more source

Fish Scales: A Multifunctional Biomaterial from Nature

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

Phylogenetically‐informed estimates of notosuchian (Archosauria, Crocodylomorpha) body size and the challenges of inferring macroevolutionary patterns in extinct groups

Palaeontology, Volume 69, Issue 3, 2026.
Abstract Notosuchian crocodylomorphs were predominantly active terrestrial predators, exhibiting a wide range of ecomorphological specializations and body sizes. Given that body size plays an important role in the life history of vertebrates, its accurate estimation for notosuchians is crucial for understanding macroevolutionary and macroecological ...
Ana Laura S. Paiva, Pedro L. Godoy, Daniel M. dos Santos, Max C. Langer, Philip D. Mannion   +4 more
wiley   +1 more source

The relationships of antiarchs (Devonian placoderm fishes)—evidence supporting placoderm monophyly

Journal of Vertebrate Paleontology, 2008
A recent analysis of the vascularization of the pectoral fin in antiarchs indicated that they resembled jawless osteostracans rather than other jawed vertebrates, thereby challenging the monophyly of the class Placodermi. Examination of the evidence proposed to support this new hypothesis shows misinterpretation of well-established morphology in a ...
openaire   +1 more source

Synapsids and sensitivity: Broad survey of tetrapod trigeminal canal morphology supports an evolutionary trend of increasing facial tactile specialization in the mammal lineage

The Anatomical Record, Volume 309, Issue 4, Page 864-911, April 2026.
Abstract The trigeminus nerve (cranial nerve V) is a large and significant conduit of sensory information from the face to the brain, with its three branches extending over the head to innervate a wide variety of integumentary sensory receptors, primarily tactile.
Juri A. Miyamae, Julien Benoit, Irina Ruf, Zoleka Sibiya, Bhart‐Anjan S. Bhullar   +4 more
wiley   +1 more source