Results 81 to 90 of about 717 (179)
The origin of the myelination program in vertebrates [PDF]
, 2008 SummaryThe myelin sheath was a transformative vertebrate acquisition, enabling great increases in impulse propagation velocity along axons. Not all vertebrates possess myelinated axons, however, and when myelin first appeared in the vertebrate lineage is
Goujet, D., Zalc, B., Colman, D.
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Ecomorphological inferences in early vertebrates: reconstructing Dunkleosteus terrelli (Arthrodira, Placodermi) caudal fin from palaeoecological data [PDF]
PeerJ, 2017 Our knowledge about the body morphology of many extinct early vertebrates is very limited, especially in regard to their post-thoracic region. The prompt disarticulation of the dermo-skeletal elements due to taphonomic processes and the lack of a well ...
Humberto G. Ferrón +2 more
doaj +2 more sources
Journal of Anatomy, Volume 247, Issue 3-4, Page 418-441, September/October 2025.The tooth patterning logic, which cannot be inferred from surface morphology, is revealed by visualizing buried tooth remnants in 3D. The primary teeth are added labially, initially organized in radial rows, which transition into linear rows where the coronoid becomes slender.
Donglei Chen
wiley +1 more source
A Silurian placoderm with osteichthyan-like marginal jaw bones
Nature, 2013 The gnathostome (jawed vertebrate) crown group comprises two extant clades with contrasting character complements. Notably, Chondrichthyes (cartilaginous fish) lack the large dermal bones that characterize Osteichthyes (bony fish and tetrapods). The polarities of these differences, and the morphology of the last common ancestor of crown gnathostomes ...
Zhu, Min +10 more
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Paleo‐evo‐devo implications of a revised conceptualization of enameloids and enamels
Biological Reviews, Volume 100, Issue 3, Page 1047-1066, June 2025.ABSTRACT Understanding the origin and evolution of the mineralized skeleton is crucial for unravelling vertebrate history. However, several limitations hamper our progress. The first obstacle is the lack of uniformity and clarity in the literature for the definition of the tissues of concern, especially of enameloid(s) and enamel(s), resulting in ...
Guillaume Houée +3 more
wiley +1 more source
Placoderm interrelationships: a new interpretation, with a short review of placoderm classifications
, 1984 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire +1 more source
Vampyrella crystallifera sp. nov., an Amoeba That Dissolves Entire Algal Cells at a Remarkable Speed
Ecology and Evolution, Volume 15, Issue 3, March 2025.The new vampyrellid amoeba Vampyrella crystallifera inhabits wet Sphagnum plants in temperate moorlands. Unlike its congeners, it engulfs entire algal cells and breaks them down at a fascinating speed. This represents a feeding habit that was unexpected for the genus Vampyrella and showcases the exceptional diversity of predator–prey interactions found
Andreas Suthaus, Sebastian Hess
wiley +1 more source
The body musculature of Arthrodire Placoderms
, 2009 The exceptionally preserved Late Devonian (Frasnian) fishes from the Gogo Formation, Western Australia, have recently been recognized to contain, sometimes extensive, remains of musculature preserved in three dimensions.
Long, J., Ahlberg, P., Trinajstic, Kate
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On the Maxillofacial Development of Mice, Mus musculus
Journal of Morphology, Volume 286, Issue 3, March 2025.This study focused on the craniofacial development of the mouse (Mus musculus), particularly the maxillofacial region. Using three‐dimensional reconstructions of histological sections combined with whole‐mount staining, we provided a detailed description of skeletal, neural, and vascular formation from the pharyngula (9.0 dpc) to late fetal stages (18 ...
Hiroki Higashiyama +4 more
wiley +1 more source
Facies differentiation and Late Devonian placoderms fossils in the Holy Cross Mountains [PDF]
, 2006 Main Late Devonian placoderm taxa known from the Holy Cross Mountains are characterised. The distribution of the Late Devonian placoderm fossils is described.
Szrek, P.
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