Results 21 to 30 of about 766 (151)

Suction feeding of West African lungfish (Protopterus annectens): An XROMM analysis of jaw mechanics, cranial kinesis, and hyoid mobility

open access: yesBiology 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
doaj   +1 more source

The early diversification of ray‐finned fishes (Actinopterygii): hypotheses, challenges and future prospects

open access: yesBiological Reviews, Volume 98, Issue 1, Page 284-315, February 2023., 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.
Struan Henderson   +3 more
wiley   +1 more source

Histology of juvenile skin of Lepidosiren paradoxa Fitzinger, 1837 (Sarcopterygii, Dipnoi) [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2019
: The skin of three juvenile Lepidosiren paradoxa specimens was examined. The epidermis was composed of a polystratified epithelium resting on a basement membrane, including mucus-secreting cells, and a cuticle of mucopolysaccharides on the surface.
LUIS ALBERTO ROMANO   +3 more
doaj   +1 more source

How big can a walking fish be? A theoretical inference based on observations on four land‐dwelling fish genera of South Vietnam

open access: yesIntegrative Zoology, Volume 17, Issue 5, Page 849-878, September 2022., 2022
Modern amphibiotic fishes use various walking techniques but are smaller in length than half a meter, whereas extinct tetrapodomorph fishes of Devonian ranged from 0.5 to 2.5 m. Could they walk out of water, and how did they walk if they could? This study argues that, in recent ichthyofauna, snakehead is most appropriate for modeling walking technique ...
Alexander N. KUZNETSOV
wiley   +1 more source

New locality for Lepidosiren paradoxa Fitzinger, 1837 (Dipnoi: Lepidosirenidae) in Argentina [PDF]

open access: yesCheck List, 2017
In this study has document a new locality and thus a southern extension of the distribution of the lungfish Lepidosiren paradoxa to the coast of the Entre Rios Province in the lower Paraná River. This finding increases the range of L.
Evelyn Vallone
doaj   +3 more sources

Phylogeny and evolutionary history of the amniote egg

open access: yesJournal of Morphology, Volume 282, Issue 7, Page 1080-1122, July 2021., 2021
We review morphological features of the amniote egg and embryos in a large comparative phylogenetic framework, including all major clades of extant vertebrates. We discuss 40 characters that are relevant for an analysis of the evolutionary history of the vertebrate egg. Special attention is given to the morphology of the cellular yolk sac, the eggshell,
J. Matthias Starck   +2 more
wiley   +1 more source

Early evolution of the lungfish pectoral fin endoskeleton: evidence from the Middle Devonian (Givetian) Pentlandia macroptera

open access: yesFrontiers in Earth Science, 2014
As the closest living relatives of tetrapods, lungfishes are frequently used as extant models for exploring the fin-to-limb transition. These studies have generally given little consideration to fossil taxa.
Emma eJude   +3 more
doaj   +1 more source

Specimen-level phylogenetics in paleontology using the Fossilized Birth-Death model with sampled ancestors [PDF]

open access: yesPeerJ, 2017
Bayesian phylogenetic methods integrating simultaneously morphological and stratigraphic information have been applied increasingly among paleontologists.
Andrea Cau
doaj   +2 more sources

The “mid”-Cretaceous (Lower Cenomanian) Continental Vertebrates of Gara Samani, Algeria. Sedimentological Framework and Palaeodiversity

open access: yesFrontiers in Earth Science, 2022
Excellent outcrops of the upper part of the “Continental Intercalaire” deposits occur in the Gara Samani area, southern Algeria. These strata are recognised herein as belonging to the Gara Samani Formation, which is composed of the Samani Vertebrate-rich
Madani Benyoucef   +6 more
doaj   +1 more source

The first virtual cranial endocast of a lungfish (sarcopterygii: dipnoi).

open access: yesPLoS ONE, 2014
Lungfish, or dipnoans, have a history spanning over 400 million years and are the closest living sister taxon to the tetrapods. Most Devonian lungfish had heavily ossified endoskeletons, whereas most Mesozoic and Cenozoic lungfish had largely ...
Alice M Clement, Per E Ahlberg
doaj   +1 more source

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