Results 31 to 40 of about 8,625 (225)
Cartilaginous fish are fascinating taxa, present in the folklore and art of many different cultures. Moreover, they display several unique anatomical, physiological, molecular, and behavioral characteristics making them extremely interesting from a ...
André Gomes-dos-Santos +7 more
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An identification key for Chondrichthyes egg cases of the Mediterranean and Black Sea
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
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
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The Synarcual of the Little Skate, Leucoraja erinacea: Novel Development Among the Vertebrates
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
Questioning hagfish affinities of the enigmatic Devonian vertebrate Palaeospondylus [PDF]
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
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Elasmobranch (Chondrichthyes) assemblages from the Albian (Lower Cretaceous) of Ukraine
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
Fossil Chondrichthyes from the Neogene of Portugal: Diversity and Occurrence
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
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
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The whale shark genome reveals patterns of vertebrate gene family evolution
Chondrichthyes (cartilaginous fishes) are fundamental for understanding vertebrate evolution, yet their genomes are understudied. We report long-read sequencing of the whale shark genome to generate the best gapless chondrichthyan genome assembly yet ...
Milton Tan +9 more
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Chondrichthyans (sharks, rays and chimeras) are a fascinating and highly vulnerable group of early branching gnathostomes. However, they remain comparatively poorly sampled from the point of view of molecular resources, with deep water taxa being ...
Nair Vilas-Arrondo +10 more
doaj +1 more source

