Results 81 to 90 of about 10,034 (242)

Neural canal ridges: A novel osteological correlate of postcranial neuroanatomy in dinosaurs

The Anatomical Record, Volume 308, Issue 5, Page 1349-1368, May 2025.
Abstract In this article, we document the widespread presence of bony ridges in the neural canals of non‐avian dinosaurs, including a wide diversity of sauropods, two theropods, a thyreophoran, and a hadrosaur. These structures are present only in the caudal vertebrae.
Jessie Atterholt, Mathew J. Wedel, Ron Tykoski, Anthony R. Fiorillo, Femke Holwerda, Thierra K. Nalley, Taormina Lepore, John Yasmer   +7 more
wiley   +1 more source

Comparative osteology of the hynobiid complex Liua‐Protohynobius‐Pseudohynobius (Amphibia, Urodela): Ⅰ. Cranial anatomy of Pseudohynobius

Journal of Anatomy, 2020
Hynobiidae are a clade of salamanders that diverged early within the crown radiation and that retain a considerable number of features plesiomorphic for the group.
Jia Jia, K. Gao, Jian-Ping Jiang, G. S. Bever, R. Xiong, Gang Wei   +5 more
semanticscholar   +1 more source

Effects of life history strategies and habitats on limb regeneration in plethodontid salamanders

Developmental Dynamics, Volume 254, Issue 5, Page 396-419, May 2025.
Abstract Background Salamanders are the only tetrapods that exhibit the ability to fully regenerate limbs. The axolotl, a neotenic salamander, has become the model organism for regeneration research. Great advances have been made providing a detailed understanding of the morphological and molecular processes involved in limb regeneration.
Vivien Bothe, Hendrik Müller, Neil Shubin, Nadia Fröbisch   +3 more
wiley   +1 more source

New diverse amphibian and reptile assemblages from the late Neogene of northern Greece provide novel insights into the emergence of extant herpetofaunas of the southern Balkans

Swiss Journal of Palaeontology
We here describe abundant new fossil material of amphibians and reptiles from different late Neogene localities of northern Greece: the Early Pliocene (MN 14) of Spilia 0, Spilia 1, and Spilia 2; the Early Pliocene (MN 15) of Spilia 3, Spilia 4, Spilia 5,
Georgios L. Georgalis, Andrea Villa, Martin Ivanov, Massimo Delfino   +3 more
doaj   +1 more source

Locomotion pattern and trunk musculoskeletal architecture among Urodela

Acta Zoologica, 2014
AbstractWe comparatively examined the trunk musculature and prezygapophyseal angle of mid‐trunk vertebra in eight urodele species with different locomotive modes (aquatic Siren intermedia, Amphiuma tridactylum, Necturus maculosus and Andrias japonicus; semi‐aquatic Cynops pyrrhogaster, Cynops ensicauda; and terrestrial Hynobius nigrescens, Hynobius ...
Omura, Ayano, Ejima, Ken-Ichiro, Honda, Kazuya, Anzai, Wataru, Taguchi, Yuki, Koyabu, Daisuke, Endo, Hideki   +6 more
openaire   +2 more sources

Traditional water structures in villages support amphibian populations within a protected landscape

Ecosphere, Volume 16, Issue 5, May 2025.
Abstract Amphibians are among the most globally threatened vertebrates, with habitat loss and degradation being the primary drivers of their decline. While natural waterbodies are essential for amphibian survival, artificial habitats can also serve as important refuges, particularly in human‐altered landscapes.
Jose W. Valdez, Jeremy Dertien, Haruna Fimmel, Tim Eric Kaufmann, Carolin Kremer, Leonie Schilling, Lena Hartmann, Isabell Hummel, Horst Paul Uellendahl, Asha Majeed, Henrique M. Pereira   +10 more
wiley   +1 more source

Identification of axolotl BH3-only proteins and expression in axolotl organs and apoptotic limb regeneration tissue

Biology Open, 2018
Like other urodela amphibians, axolotls are able to regenerate lost appendages, even as adults, rendering them unique among higher vertebrates. In reaction to the severe trauma of a lost limb, apoptosis seems to be primarily implicated in the removal of ...
Vesna Bucan, Claas-Tido Peck, Inas Nasser, Christina Liebsch, Peter M. Vogt, Sarah Strauß   +5 more
doaj   +1 more source

Toe Tip Morphology in Six Species of Salamanders, genus Ambystoma (Caudata: Ambystomatidae) from Arkansas Using Scanning Electron Microscopy [PDF]

, 1988
The toe tip friction surface in six species of Ambystoma (A. annulatum, A.maculatum, A.opacum, A. talpoideum, A. texanum, and A. tigrinum) from Arkansas was examined using scanning electron microscopy.
Trauth, Stanley E., Wilhide, J. D.
core   +2 more sources

Climate Change Effects on the Only Western Palearctic Plethodontids: Range Changes and Possible Depletion of Intraspecific Genetic Diversity

Journal of Biogeography, Volume 52, Issue 3, Page 686-698, March 2025.
ABSTRACT Aim Amphibians are particularly sensitive to rapid climatic shifts, due to their eco‐physiology, life history traits and high frequency of narrowly distributed species. The genus Speleomantes encompasses the only extant Western Palearctic plethodontids, with three species occurring in peninsular Italy and the remaining five endemic to Sardinia
Mattia Iannella, Francesco Cerasoli, Enrico Lunghi, Giulia Console, Maurizio Biondi, Neftalí Sillero   +5 more
wiley   +1 more source

Sexual dimorphism in the Chinese endemic species Pachyhynobius shangchengensis Fei, Qu and Wu, 1983 (Urodela: Hynobiidae) [PDF]

PeerJ, 2019
Sexual dimorphism (SD) is a widespread phenomenon in most vertebrate species and is exhibited in a myriad of ways. In amphibians, sexual size dimorphism, in which females are larger than males, is the most common type, and sexual shape dimorphism varies ...
Jianli Xiong, Baowei Zhang, Qiangqiang Liu, Tao Pan, Jianping Gou   +4 more
doaj   +2 more sources