An identification key for Chondrichthyes egg cases of the Mediterranean and Black Sea
, 2021 Chondrichthyan egg cases are important elements for species-specific identification and also provide a valuable aid in determining a species spatial distribution, as well as for defining spawning a...
C. Mancusi +11 more
semanticscholar +1 more source
Mitochondrial DNA. Part B. Resources, 2021 Skates, Chondrichthyes fishes from order Rajiformes, are the most species-rich group of all Batoidea. However, their phylogenetic relationships and systematics is still a highly discussed and controversial subject.
André Gomes-dos-Santos +6 more
doaj +1 more source
Reproductive biology of the eyespot skate atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae) an endemic species of the southwestern atlantic ocean (34ºs - 42ºS) [PDF]
, 2018 Atlantoraja cyclophora is an endemic skate to the continental shelf of the Southwestern Atlantic Ocean (22ºS-47ºS) and a bycatch species in commercial bottom trawl fisheries. The morphometric relationships, the size at maturity and the reproductive cycle
Colonello, Jorge Horacio +3 more
core +3 more sources
Elasmobranch (Chondrichthyes) assemblages from the Albian (Lower Cretaceous) of Ukraine
Cretaceous research (Print), 2021 Sampling of six horizons of quartz-glauconite sands in Kaniv dislocations in Ukraine yielded more than three thousand vertebrate specimens, including elasmobranch teeth, chimaera dental plates, actinopterygian and sauropsid teeth and bones.
Tymofii Sokolskyi, G. Guinot
semanticscholar +1 more source
The Synarcual of the Little Skate, Leucoraja erinacea: Novel Development Among the Vertebrates
Frontiers in Ecology and Evolution, 2019 Evolutionary variation in anteroposterior patterning of the axial skeleton is a major contributor to the evolution of the vertebrate body plan, with five canonical vertebral types in tetrapods (cervical, thoracic, lumbar, sacral, caudal).
Zerina Johanson +3 more
doaj +1 more source
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
core +3 more sources
Questioning hagfish affinities of the enigmatic Devonian vertebrate Palaeospondylus [PDF]
Royal Society Open Science, 2017 Palaeospondylus gunni Traquair, 1890 is an enigmatic Devonian vertebrate whose taxonomic affinities have been debated since it was first described. Most recently, Palaeospondylus has been identified as a stem-group hagfish (Myxinoidea).
Zerina Johanson +5 more
doaj +1 more source
Shark and ray teeth from the Hauterivian (Lower Cretaceous) of north-east England [PDF]
, 1999 Sampling of hiatal horizons within the Hauterivian part of the Speeton Clay Formation of north-east England has produced teeth of several species of sharks and rays, four of which are previously unnamed.
Mitchell, S.F. +2 more
core +1 more source
Fossil Chondrichthyes from the Neogene of Portugal: Diversity and Occurrence
Anuário do Instituto de Geociências, 2021 Portugal has a rich fossil record both on the continent and in the Azores islands (Santa Maria). For decades, researchers have found thousands of fossils and identified hundreds of species from major taxonomic groups.
P. Fialho +2 more
semanticscholar +1 more source
Fishes, 2023 Megamouth sharks Megachasma pelagios Taylor, Compagno, and Struhsaker, 1983, are a large-bodied, planktivorous, deep-sea species with peculiar morphology.
Chan-gyu Yun, Yuuki Y. Watanabe
doaj +1 more source