Results 11 to 20 of about 671 (151)
Morphology and paleoecology of a hybodontiform with serrated teeth, Priohybodus arambourgi, from the Late Jurassic of northeastern Brazil. [PDF]
Anat Rec (Hoboken)Abstract Hybodontiformes was a diverse, successful, and important group of shark‐like chondrichthyans known from a variety of ecosystems. Some representatives of the order had a wide palaeogeographic distribution, as is the case with Priohybodus arambourgi. With a multicuspidate crown, P. arambourgi was the first hybodontiform to develop fully serrated
Eltink E +5 more
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The early diversification of ray-finned fishes (Actinopterygii): hypotheses, challenges and future prospects. [PDF]
Biol Rev Camb Philos Soc, 2023 ABSTRACT Actinopterygii makes up half of living vertebrate diversity, and study of fossil members during their Palaeozoic rise to dominance has a long history of descriptive work. Although research interest into Palaeozoic actinopterygians has increased in recent years, broader patterns of diversity and diversity dynamics remain critically understudied.
Henderson S +3 more
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A high latitude Devonian lungfish, from the Famennian of South Africa [PDF]
PeerJ, 2019 New fossil lungfish remains comprising two parasphenoids, tooth plates and scales from the Famennian Witpoort Formation of South Africa are described. From the parasphenoid material, which bears similarity to Oervigia and Sagenodus but is nevertheless ...
Robert W. Gess, Alice M. Clement
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New Cretaceous lungish material from southern South America, Argentina [PDF]
Research & Knowledge, 2017 Dipnoi is a large group of sarcopterygians which ranges from the Early Devonian to the present. Traditionally, it was considered that their taxonomic diversity decreased at the end of Paleozoic.
P. Guillermina Giordano +2 more
doaj +1 more source
KALIPHARYNX PIRAMBOAE GEN. ET SP. N. (TREMATODA : FELLODISTOMIDAE) PARASITA DO PEIXE PULMONADO AMAZÔNICO LEPIDOSIREN PARADOXA FITZINGER [PDF]
Acta Amazonica, 1983 Resumo Kalipharynx piramboae gen. e sp. n. (Trematoda: Fellodistomidae) é descrito do peixe pulmonado Amazônico chamado piramboia, Lepidosiren paradoxa (Dipnoi: Lepidosirenidae). O novo gênero distingue-se dos demais gêneros da família por apresentar uma
Walter A. Boeger, Vernon E. Thatcher
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General principles for assignments of communities from eDNA: Open versus closed taxonomic databases
Environmental DNA, Volume 5, Issue 2, Page 326-342, March 2023., 2023 The collection of environmental DNA (eDNA) from water has revolutionized biodiversity assessments and enables the detection of rare and invasive species.To ensure that biodiversity is accurately detected and identified in metabarcoding studies, we must guarantee key steps in bioinformatic pipelines, and use suitable and accurate sequence reference ...
Rosetta C. Blackman +7 more
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Papers in Palaeontology, Volume 9, Issue 2, March/April 2023., 2023 Abstract Peirosaurids form an extinct clade of terrestrial crocodylomorphs from the Cretaceous of Africa and South America. Here, we describe a new mandibular ramus attributable to Hamadasuchus cf. rebouli from the Albian–Cenomanian of La Gara Samani (Algeria).
Yohan Pochat‐Cottilloux +4 more
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Paedomorphosis and neurocranial ossification in two Devonian lungfishes
Acta Palaeontologica Polonica, 2022 Lungfishes are one of the few early vertebrate clades with a rich 410-million-years-old fossil record. Lungfishes are characterized by a low evolutionary rate assumed to be associated with paedomorphosis since the Late Devonian.
MARIE BOIROT +2 more
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A Middle-Late Devonian fish fauna from the Sierra de Perijá, western Venezuela, South America [PDF]
Fossil Record, 2002 A new Devonian fossil fish fauna from the region of Caño Colorado between the Rio Palmar and Rio Socuy, Sierra de Perijá, Venezuela, comes from two localities and several horizons within the Campo Chico Formation, dated on plants and spores as Givetian ...
G. C. Young, J. M. Moody
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Biology Open, 2022 Suction feeding in fishes is characterized by rapid cranial movements, but extant lungfishes (Sarcopterygii: Dipnoi) exhibit a reduced number and mobility of cranial bones relative to actinopterygian fishes. Despite fusion of cranial elements, lungfishes
Samantha M. Gartner +6 more
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