Results 21 to 30 of about 9,373 (153)

Size of catch, reproduction and feeding of the small-eye smooth-hound, Mustelus higmani (Carcharhiniformes: Triakidae), in Margarita Island, Venezuela

Scientia Marina, 2015
Mustelus higmani is categorized as “least concern” according to the red list of the International Union for Conservation of Nature, but gaps in population trends occur in most of its distribution range.
Alejandro Tagliafico, Iván Hernández-Ávila, Salomé Rangel, Néstor Rago   +3 more
doaj   +1 more source

New Late Cretaceous microvertebrate assemblage from the Campanian–Maastrichtian Williams Fork Formation, northwestern Colorado, USA, and its paleoenvironmental implications

Acta Palaeontologica Polonica, 2022
We describe a microvertebrate assemblage from the J&M site, of the Upper Cretaceous (Campanian–Maastrichtian) Williams Fork Formation. Breakdown of fossil bearing matrix was achieved with the use of heated dimethyl sulfoxide.
NICKOLAS A. BRAND, ANDREW B. HECKERT, ISRAEL SANCHEZ, JOHN R. FOSTER, REBECCA K. HUNT-FOSTER, JAELYN J. EBERLE   +5 more
doaj   +1 more source

Langhian rays (Chondrichthyes, Batomorphii) from Brielas, Lower Tagus Basin, Portugal

Geologica Acta, 2019
The Langhian Vc unit of Brielas section (Caparica road, Almada), in the marine Miocene of the Lower Tagus Basin (West Portugal), is rich in batoid species.
P. FIALHO, A. BALBINO, M.T. ANTUNES
doaj   +1 more source

The complete mitochondrial genome of the deep-water cartilaginous fish Hydrolagus affinis (de Brito Capello, 1868) (Holocephali: Chimaeridae)

Mitochondrial DNA. Part B. Resources, 2020
Cartilaginous fishes are a highly vulnerable vertebrate group but remain poorly studied, especially those occupying deep-water ecological niches. Here, we describe the complete mitogenome of the deep-water chimaeriform Hydrolagus affinis (de Brito ...
André Gomes-dos-Santos, Nair Vilas Arrondo, André M. Machado, Ana Veríssimo, Montse Pérez, Esther Román, L. Filipe C. Castro, Elsa Froufe   +7 more
doaj   +1 more source

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

Mitochondrial 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, Nair Vilas-Arrondo, André M. Machado, Ana Veríssimo, Montse Pérez, Francisco Baldó, L. Filipe C. Castro, Elsa Froufe   +7 more
doaj   +1 more source

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

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, André M. Machado, Sofia Graça Aranha, Ester Dias, Ana Veríssimo, L. Filipe C. Castro, Elsa Froufe   +6 more
doaj   +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, Kyle Martin, Gareth Fraser, Katherine James   +3 more
doaj   +1 more source

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, Moya Smith, Sophie Sanchez, Tim Senden, Kate Trinajstic, Cathrin Pfaff   +5 more
doaj   +1 more source

Insights from three decades of IUCN Red List assessments catalyzing shark, ray, and chimaera conservation. [PDF]

Conserv Biol
Abstract The International Union for Conservation of Nature (IUCN) Red List of Threatened Species is a critical measure of global aquatic and terrestrial biodiversity status. It is also the basis for the Red List Index, which tracks extinction risk over time.
Finucci B, Rigby CL, Dulvy NK, Cavanagh RD, Fowler S, Harrison LR, Lawson JM, Pollom R, Simpfendorfer CA, Walls RHL, Jabado RW.   +10 more
europepmc   +2 more sources

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

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