Results 21 to 30 of about 6,684 (211)
Biodiversitas Journal of Biological Diversity, 1970 Sutarno, Setyawan AD, Suyatna I. 2012. Species diversity of critically endangered pristid sawfishes (Elasmobranchii: Pristidae) Elasmobranchii: Pristidae (Malay Archipelago). Biodiversitas 13: 161-171. The pristid sawfishes (Pristidae) are notable because of their sawlike rostrum and large body size (up to seven meters).
SUTARNO SUTARNO +2 more
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Natural History Sciences, 2023 A remarkable, complete specimen of a squalorajid holocephalian is described for the first time from the Lower Jurassic (lower Sinemurian) rocks of Osteno (Como, NW Italy).
Christopher J. Duffin +2 more
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Diversification of the Neoselachii (Chondrichthyes) during the Jurassic and Cretaceous [PDF]
, 2006 The Neoselachii are a monophyletic group including all of the extant sharks and rays. They underwent rapid diversification throughout the Jurassic and Cretaceous, going from low-diversity assemblages of members of extinct orders in the Late Triassic to ...
Underwood, Charlie J.
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A new chondrichthyan fauna from the Late Jurassic of the Swiss Jura (Kimmeridgian) dominated by hybodonts, chimaeroids and guitarfishes [PDF]
, 2017 The fossil record of chondrichthyans (sharks, rays and chimaeroids) principally consists of isolated teeth, spines and dermal denticles, their cartilaginous skeleton being rarely preserved.
Billon Bruyat, Jean Paul +3 more
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The mitogenomic phylogeny of the Elasmobranchii (Chondrichthyes)
Mitochondrial DNA Part A, 2017 Here we present a mitogenomic perspective on the evolution of sharks and rays, being a first glance on the complete mitochondrial history of such an old and diversified group of vertebrates. The Elasmobranchii is a diverse subclass of Chondrichthyes, or cartilaginous fish, with about 1200 species of ocean- and freshwater-dwelling fishes spread all over
Amaral, Cesar R. L. +4 more
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Frontiers in Neuroscience, 2018 The neuropeptide gonadotropin-releasing hormone (GnRH) plays an important role in the control of reproductive functions. Vertebrates possess multiple GnRH forms that are classified into three main groups, namely GnRH1, GnRH2, and GnRH3.
Anne-Laure Gaillard +9 more
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Mineralization of the Callorhinchus Vertebral Column (Holocephali; Chondrichthyes)
Frontiers in Genetics, 2020 Members of the Chondrichthyes (Elasmobranchii and Holocephali) are distinguished by their largely cartilaginous endoskeletons, which comprise an uncalcified core overlain by a mineralized layer; in the Elasmobranchii (sharks, skates, rays) most of this ...
Jacob B. Pears +4 more
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The southernmost range limit for the hidden angelshark Squatina occulta [PDF]
, 2016 Background: Angelsharks (Genus Squatina) are distributed in the southern Southwest Atlantic Ocean between southeastern Brazil and central Patagonia. The endangered hidden angelshark Squatina occulta is reported in the literature as ranging from Espírito ...
Chiaramonte, Gustavo Enrique +4 more
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Comparative morphology of labial cartilages in sharks (Chondrichthyes, Elasmobranchii) [PDF]
The European Zoological Journal, 2020 During the last years, feeding mechanisms of sharks have been documented mainly based on their stomach contents supplemented by video footages of feeding behaviours in some species. Rare kinematic analyses of shark jaws contributed additionally to our knowledge. However, not all structures important to prey capture in sharks have been investigated yet.
Klimpfinger, C., Kriwet, J.
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Barremian and Aptian (Cretaceous) sharks and rays from Speeton, Yorkshire, north-east England [PDF]
, 2004 Bulk sampling of a number of horizons within the upper part of the Speeton Clay Type section has produced teeth and other remains of sharks and rays from several poorly studied horizons.
Applegate +34 more
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