Results 31 to 40 of about 1,575 (199)
The first Jurassic coelacanth from Switzerland
Swiss Journal of Palaeontology, 2022 Coelacanths form a clade of sarcopterygian fish represented today by a single genus, Latimeria. The fossil record of the group, which dates back to the Early Devonian, is sparse.
Christophe Ferrante +2 more
doaj +1 more source
Earth Sciences Research Journal, 2015 The Tatuí Formation, one of the Brazilian Paraná Basin geological units, is developed solely in the State of São Paulo, southeast Brazil. It is studied herein, through outcrops at the eastern border of the basin, which are siltstones and fine sandstones,
Artur Chahud, Setembrino Petri
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An onychodont fish (Osteichthyes, Sarcopterygii) from the Early Devonian of China, and the evolution of the Onychodontiformes [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2009 Although the superbly preserved specimens ofOnychodus jandemarraihave greatly advanced our understanding of the Onychodontiformes, a primitive sarcopterygian group with large parasymphysial tooth whorls, the scarcity of the otoccipital material in the group hampers further morphological comparisons between onychodonts and other sarcopterygian groups ...
Jing, Lu, Min, Zhu
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Confocal Characterization of Intestinal Dendritic Cells from Myxines to Teleosts
Biology, 2022 Dendritic cells (DCs) are antigen-presenting cells (APCs) that regulate the beginning of adaptive immune responses. The mechanisms of tolerance to antigens moving through the digestive tract are known to be regulated by intestinal DCs.
Alessio Alesci +9 more
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BMC Genomics, 2017 Background Glucose-6-phosphate (G6pc) is a key enzyme involved in the regulation of the glucose homeostasis. The present study aims at revisiting and clarifying the evolutionary history of g6pc genes in vertebrates.
Lucie Marandel +5 more
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The first draft genome assembly and data analysis of the Malaysian mahseer (Tor tambroides)
Aquaculture and Fisheries, 2023 The Malaysian mahseer (Tor tambroides), one of the most valuable freshwater fish in the world, is mainly targeted for human consumption. The mitogenomic data of this species is available to date, but the genomic information is still lacking.
Melinda Mei Lin Lau +3 more
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Evolution and differential expression of a vertebrate vitellogenin gene cluster
BMC Evolutionary Biology, 2009 Background The multiplicity or loss of the vitellogenin (vtg) gene family in vertebrates has been argued to have broad implications for the mode of reproduction (placental or non-placental), cleavage pattern (meroblastic or holoblastic) and character of ...
Kongshaug Heidi +3 more
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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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On the type material of Lepidosiren paradoxa Fitzinger, 1837 (Sarcopterygii, Dipnoi)
Comptes Rendus. Biologies, 2010 Lepidosiren paradoxa , the first living dipnoan to be discovered, was first described from two specimens collected by Johann Natterer during his 18-year expedition in Brazil. Those specimens were first studied by Fitzinger and Bischoff, but few data are available to identify the syntypes of L.
Lúcio Paulo, Machado +2 more
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F1000Research, 2014 Chondrichthyan fishes are a diverse class of gnathostomes that provide a valuable perspective on fundamental characteristics shared by all jawed and limbed vertebrates.
Jennifer Wyffels +5 more
doaj +1 more source