Results 21 to 30 of about 1,490 (199)

The cranial endocast of Dipnorhynchus sussmilchi (Sarcopterygii: Dipnoi) and the interrelationships of stem-group lungfishes [PDF]

open access: yesPeerJ, 2016
The first virtual cranial endocast of a lungfish from the Early Devonian, Dipnorhynchus sussmilchi, is described. Dipnorhynchus, only the fourth Devonian lungfish for which a near complete cranial endocast is known, is a key taxon for clarifying ...
Alice M. Clement   +3 more
doaj   +7 more sources

The comparative osteology and phylogenetic relationships of African and South American lungfishes (Sarcopterygii: Dipnoi)

open access: yes, 2015
Criswell, Katharine E. (2015): The comparative osteology and phylogenetic relationships of African and South American lungfishes (Sarcopterygii: Dipnoi). Zoological Journal of the Linnean Society 174 (4): 801-858, DOI: 10.1111/zoj.12255, URL: http://dx.doi.org/10.1111/zoj ...
Criswell, Katharine E.   +1 more
openaire   +2 more sources

Ecomorphological change in lobe-finned fishes (Sarcopterygii): disparity and rates [PDF]

open access: yes, 2015
Patterns of vertebrate cranial/post-cranial trait diversification are not well-understood. Two ecological hypotheses, the ‘head-first’ model and the ‘stages’ model, predict the ordered decoupling of cranial/post-cranial ecomorphological ...
Juarez, Bryan
core   +7 more sources

Life history and ossification patterns in Miguashaia bureaui reveal the early evolution of osteogenesis in coelacanths [PDF]

open access: yesPeerJ, 2022
The study of development is critical for revealing the evolution of major vertebrate lineages. Coelacanths have one of the longest evolutionary histories among osteichthyans, but despite access to extant representatives, the onset of their weakly ...
Jorge Mondéjar Fernández   +4 more
doaj   +2 more sources

A fresh look at Cladarosymblema narrienense, a tetrapodomorph fish (Sarcopterygii: Megalichthyidae) from the Carboniferous of Australia, illuminated via X-ray tomography [PDF]

open access: yesPeerJ, 2021
Background The megalichthyids are one of several clades of extinct tetrapodomorph fish that lived throughout the Devonian–Permian periods. They are advanced “osteolepidid-grade” fishes that lived in freshwater swamp and lake environments, with some taxa ...
Alice M. Clement   +5 more
doaj   +2 more sources

A new look at the Emsian (Early Devonian), sarcopterygian fishes from the Holy Cross Mountains, Poland, with a special reference to porolepiforms

open access: yesActa Palaeontologica Polonica, 2023
Sarcopterygian remains are relatively common in the so-called “Placoderm Sandstone” (storm-origin bone-bearing breccia) from the Emsian (Lower Devonian) of Podłazie in the Holy Cross Mountains (Poland).
OLGA WILK
doaj   +1 more source

Lung evolution in vertebrates and the water-to-land transition

open access: yeseLife, 2022
A crucial evolutionary change in vertebrate history was the Palaeozoic (Devonian 419–359 million years ago) water-to-land transition, allowed by key morphological and physiological modifications including the acquisition of lungs. Nonetheless, the origin
Camila Cupello   +12 more
doaj   +1 more source

Herpetichthyes, Amphibioidei, Choanichthyes or Sarcopterygii? [PDF]

open access: yesNature, 1955
DURING recent decades, our ideas on the classification of fishes have changed greatly. In the early years of the century, it was believed that among the higher bony fishes (Osteichthyes), the ray-finned forms and crossopterygians were closely allied, and that the lungfishes were remote from the two, representing a presumably primitive if aberrant group.
ETHELWYNN TREWAVAS   +3 more
openaire   +2 more sources

150 million years of freshwater fish biogeography: vicariance or dispersal? [PDF]

open access: yesResearch & Knowledge, 2017
Freshwater fishes are supposedly good case studies to test palaeobiogeographical models because they are attached to land masses, at least primary freshwater fishes, which are unable to cross marine barriers.
Lionel Cavin
doaj   +1 more source

Coelacanths from the Middle Triassic of Switzerland and the pace of actinistian evolution [PDF]

open access: yesResearch & Knowledge, 2017
Latimeria chalumnae (Actinistia) was regarded as the ‘ancestor of the four-legged vertebrates’ and rapidly became the iconic example of a ‘living fossil’.
Christophe Ferrante   +3 more
doaj   +1 more source

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