Results 31 to 40 of about 8,625 (225)

Shedding light on the Chimaeridae taxonomy: the complete mitochondrial genome of the cartilaginous fish Hydrolagus mirabilis (Collett, 1904) (Holocephali: Chimaeridae)

open access: yesMitochondrial DNA. Part B. Resources, 2021
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
doaj   +1 more source

An identification key for Chondrichthyes egg cases of the Mediterranean and Black Sea

open access: yes, 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

The complete mitochondrial genome of the endemic Iberian pygmy skate Neoraja iberica Stehmann, Séret, Costa, & Baro 2008 (Elasmobranchii, Rajidae)

open access: yesMitochondrial 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

The Synarcual of the Little Skate, Leucoraja erinacea: Novel Development Among the Vertebrates

open access: yesFrontiers 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

Questioning hagfish affinities of the enigmatic Devonian vertebrate Palaeospondylus [PDF]

open access: yesRoyal 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

Elasmobranch (Chondrichthyes) assemblages from the Albian (Lower Cretaceous) of Ukraine

open access: yesCretaceous 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

Fossil Chondrichthyes from the Neogene of Portugal: Diversity and Occurrence

open access: yesAnuário 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

Allometric Growth of the Enigmatic Deep-Sea Megamouth Shark Megachasma pelagios Taylor, Compagno, and Struhsaker, 1983 (Lamniformes, Megachasmidae)

open access: yesFishes, 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

The whale shark genome reveals patterns of vertebrate gene family evolution

open access: yeseLife, 2021
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
doaj   +1 more source

A mitochondrial genome assembly of the opal chimaera, Chimaera opalescens Luchetti, Iglésias et Sellos 2011, using PacBio HiFi long reads

open access: yesMitochondrial DNA. Part B. Resources, 2022
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

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