Results 21 to 30 of about 1,738 (172)
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
doaj +1 more source
Histology of juvenile skin of Lepidosiren paradoxa Fitzinger, 1837 (Sarcopterygii, Dipnoi) [PDF]
Anais 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
Integrative 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
Phylogeny and evolutionary history of the amniote egg
Journal 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
Anatomical network analysis of the musculoskeletal system reveals integration loss and parcellation boost during the fins-to-limbs transition [PDF]
, 2018 Tetrapods evolved from within the lobe-finned fishes around 370 Ma. The evolution of limbs from lobe-fins entailed a major re-organization of the skeletal and muscular anatomy of appendages in early tetrapods. Concurrently, a degree of similarity between
Abbasi +73 more
core +2 more sources
Frontiers 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]
PeerJ, 2017 Bayesian phylogenetic methods integrating simultaneously morphological and stratigraphic information have been applied increasingly among paleontologists.
Andrea Cau
doaj +2 more sources
Brain - Endocast Relationship in the Australian Lungfish, Neoceratodus forsteri, Elucidated from Tomographic Data (Sarcopterygii: Dipnoi). [PDF]
PLoS ONE, 2015 Although the brains of the three extant lungfish genera have been previously described, the spatial relationship between the brain and the neurocranium has never before been fully described nor quantified.
Alice M Clement +3 more
doaj +1 more source
Frontiers 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
Identifying heterogeneity in rates of morphological evolution:Discrete character change in the evolution of lungfish (Sarcopterygii; Dipnoi) [PDF]
, 2011 Quantifying rates of morphological evolution is important in many macroevolutionary studies, and critical when assessing possible adaptive radiations and episodes of punctuated equilibrium in the fossil record.
Brusatte, S.L. +2 more
core +1 more source