Holocephali de la Formación Irati (Cuenca del Paraná), Brasil: Origen, Consideraciones Paleogeográficas y Paleoambientales [PDF]
Estudios Geologicos, 2023 La Formación Irati (Pérmico, Cisuraliano) tiene varios tipos de vertebrados acuáticos, incluyendo especies de Chondrichthyes. Se reconocen dos miembros de Irati, Assistência (superior) y Taquaral (inferior).
Artur Chahud
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Revista Mexicana de Biodiversidad, 2010 The southeastern Pacific chimaeroid Hydrolagus macrophthalmus De Buen, 1959, is reported for the first time in the northeastern Pacific on the basis of 1 male specimen (945 mm TL) caught on 13 April 1995 off Manzanillo, Colima (Mexico: 18° 30'N, 104° 15 ...
Adrián F. González-Acosta +4 more
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First record of chimaeroid fish Ischyodus from the Upper Jurassic of southwestern Gondwana [PDF]
Acta Palaeontologica Polonica, 2021 This study presents two specimens of Chimaeriformes from Upper Jurassic strata of central Chile. The material was recovered from Tithonian levels of the Baños del Flaco Formation and includes two different individuals, one preserving two articulated ...
Rodrigo A. Otero +5 more
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Faune française de l'Atlantique. Chimères (Craniata : Chondrichthyes : Holocephali) [PDF]
Reviews in Fish Biology and Fisheries, 2010 Un état de la faune marine des eaux françaises de l’Atlantique est poursuivi avec les chimères : 2 espèces de Rhinochimaeridés et 4 de Chimaeridés y sont signalées.
Quero, Jean-claude +2 more
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Heterochrony and Oophagy Underlie the Evolution of Giant Filter-Feeding Lamniform Sharks. [PDF]
Evol DevRetention of juvenile craniofacial characteristics by paedomorphosis (heterochrony) may have facilitated the evolution of gigantism in filter‐feeding lamniform sharks, by increasing the efficiency of prey acquisition. ABSTRACT Evolutionary transitions toward gigantic body sizes have profound consequences for the structure and dynamics of ecological ...
Gayford JH +3 more
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Shearing Tooth Morphology May Allow Sharks to Access Higher Trophic Levels at Smaller Sizes. [PDF]
Ecol EvolPredator morphology imposes limitations on prey selection due to biomechanical constraints, making some prey functionally inaccessible and thereby constraining predator trophic niches. We assessed how two key components of trophic morphology—tooth shape and body size—affect prey selectivity and trophic niche in two sympatric sharks with contrasting ...
Riverón S +7 more
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Enigmatic Nodal and Lefty gene repertoire discrepancy: Latent evolutionary history revealed by vertebrate-wide phylogeny. [PDF]
Dev DynAbstract Homology in vertebrate body plans is traditionally ascribed to the high‐level conservation of regulatory components within the genetic programs governing them, particularly during the “phylotypic stage.” However, advancements in embryology and molecular phylogeny have unveiled the dynamic nature of gene repertoires responsible for early ...
Kuraku S.
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Nerve Growth Factor Receptor (NGFR/p75NTR) of the Small-Spotted Catshark (Scyliorhinus canicula): Evolutionary Conservation and Brain Function. [PDF]
J Comp Neurolp75NTR expression in the brain of the basal vertebrate Scyliorhinus canicula revealed its conservation across species. Functional conservation among vertebrates was demonstrated (i) by performing the canonical PC‐12 differentiation assay with the S. canicula NGF and (ii) by complementing the p75NTR absence in a PC‐12 p75NTR−/− knock‐out clone with the ...
Chiavacci E +5 more
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Feeding habits of the cockfish, Callorhinchus callorynchus (Holocephali: Callorhinchidae) from off northern Argentina [PDF]
Neotropical Ichthyology, 2020 The feeding habits of Callorhinchus callorynchus were investigated in coastal waters off northern Argentina. The effect of body size, seasons and regions was evaluated on female diet composition using a multiple-hypothesis modelling approach ...
Jorge M. Roman +3 more
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Revealing less derived nature of cartilaginous fish genomes with their evolutionary time scale inferred with nuclear genes. [PDF]
PLoS ONE, 2013 Cartilaginous fishes, divided into Holocephali (chimaeras) and Elasmoblanchii (sharks, rays and skates), occupy a key phylogenetic position among extant vertebrates in reconstructing their evolutionary processes. Their accurate evolutionary time scale is
Adina J Renz +2 more
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