Results 51 to 60 of about 1,128 (190)

3D microstructural architecture of muscle attachments in extant and fossil vertebrates revealed by synchrotron microtomography. [PDF]

PLoS ONE, 2013
BACKGROUND: Firm attachments binding muscles to skeleton are crucial mechanical components of the vertebrate body. These attachments (entheses) are complex three-dimensional structures, containing distinctive arrangements of cells and fibre systems ...
Sophie Sanchez, Vincent Dupret, Paul Tafforeau, Katherine M Trinajstic, Bettina Ryll, Pierre-Jean Gouttenoire, Lovisa Wretman, Louise Zylberberg, Françoise Peyrin, Per E Ahlberg   +9 more
doaj   +1 more source

A diverse group of underappreciated zygnematophytes deserves in-depth exploration

Applied Phycology, 2022
The conjugating green algae (Zygnematophyceae) are the closest relatives of land plants and hence are of great evolutionary interest. Besides the popular placoderm desmids and the filamentous species, there is an underappreciated diversity of unicellular
Anna Busch, Sebastian Hess
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

The hyoid arch and braincase anatomy of Acanthodes support chondrichthyan affinity of ‘acanthodians’

, 2015
Solving the evolutionary relationships of the acanthodians is one of the key problems in reconstructing ancestral anatomical conditions for the jawed vertebrates (gnathostomes).
Brazeau, MD, de Winter, V
core   +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

Newinsights in the ontogeny and taphonomy of the Devonian acanthodian Triazeugacanthus affinis from the Miguasha Fossil-Lagerstatte, Eastern Canada [PDF]

, 2015
Progressive biomineralization of a skeleton occurs during ontogeny in most animals. In fishes, larvae are poorly mineralized, whereas juveniles and adults display a progressively more biomineralized skeleton.
Balan, Etienne, Chevrinais, M., Cloutier, R.   +2 more
core   +4 more sources

The lower jaw of Devonian ray‐finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology

The Anatomical Record, Volume 309, Issue 3, Page 550-602, March 2026.
Abstract Actinopterygii is a major extant vertebrate group, but limited data are available for its earliest members. Here we investigate the morphology of Devonian actinopterygians, focusing on the lower jaw. We use X‐ray computed tomography (XCT) to provide comprehensive descriptions of the mandibles of 19 species, which span the whole of the Devonian
Ben Igielman, Rodrigo Tinoco Figueroa, Robert R. Higgins, Stephanie E. Pierce, Michael I. Coates, Emily M. Troyer, Vincent Fernandez, Kathleen Dollman, Jing Lu, Min Zhu, Matt Friedman, Sam Giles   +11 more
wiley   +1 more source

A new selenosteid placoderm from the Late Devonian of the eastern Anti-Atlas (Morocco) with preserved body outline and its ecomorphology

Frontiers in Ecology and Evolution, 2022
Placoderms are an extinct group of early jawed vertebrates that play a key role in understanding the evolution of the gnathostome body plan, including the origin of novelties such as jaws, teeth, and pelvic fins.
Melina Jobbins, Martin Rücklin, Martin Rücklin, Humberto G. Ferrón, Humberto G. Ferrón, Christian Klug   +5 more
doaj   +1 more source

The Dermal Skeleton of Stem‐Actinopterygian Moythomasia durgaringa and Its Implications for the Nature of the Ancestral Osteichthyan

Journal of Morphology, Volume 287, Issue 3, March 2026.
The figure presents a model of Moythomasia and a schematic histological model illustrating the internal structure and features of the cranial bones. These include bone (brown), osteocyte spaces (red), spheritic bone (light brown), osteon spaces (orange), dentine and canaliculi (green), pulp canal (yellow), ganoine (gray), arrested growth lines (dashed ...
Xianren Shan, Edine Pape, Joseph N. Keating, Martin Rücklin, Davide Pisani, Philip C. J. Donoghue   +5 more
wiley   +1 more source

Rhipidistians (Sarcopterygii) from the Hunter Siltstone (Late Famennian) near Grenfell, NSW, Australia [PDF]

Fossil Record, 2000
Rhipidistian sarcopterygian fishes (Dipnomorpha + Tetrapodomorpha) are well represented in the upper levels of the Hunter Siltstone (latest Famennian) near Grenfell. New South Wales (NSW), Australia.
Z. Johanson, A. Ritchie
doaj   +5 more sources