Results 71 to 80 of about 598 (186)

MicroRNAs support a turtle + lizard clade. [PDF]

open access: yesBiol Lett, 2012
Despite much interest in amniote systematics, the origin of turtles remains elusive. Traditional morphological phylogenetic analyses place turtles outside Diapsida—amniotes whose ancestor had two fenestrae in the temporal region of the skull (among the ...
Lyson TR   +5 more
europepmc   +2 more sources

Youngina capensis - Hunt et al., 2023 [PDF]

open access: yes, 2023
Data associated with our phylogenetic analyses: NEXUS file, character list and Bayesian scripts (allcompat and halfcompat). Analyses from 'A description of the palate and mandible of Youngina capensis (Sauropsida, Diapsida) based on synchrotron ...
Annabel Kate Hunt
core   +1 more source

Figure 10 in Braincase evolution in suchian archosaurs (Reptilia: Diapsida): evidence from the rauisuchian Batrachotomus kupferzellensis [PDF]

open access: yes, 2002
Figure 10. Strict consensus tree of five most parsimonious trees (MPTs) retrieved by parsimony analysis of data in Table 1. These MPTs have a length of 37 steps, a consistency index of 0.811, and a retention index of 0.889.
Gower, David J.
core   +1 more source

The early evolution of rhynchosaurs

open access: yesFrontiers in Ecology and Evolution, 2016
The rhynchosaurian archosauromorphs are an important and diverse group of fossil tetrapods that first appeared during the Early Triassic and probably became extinct during the early Late Triassic (early Norian).
Martin Daniel Ezcurra   +3 more
doaj   +1 more source

A PUTATIVE JUVENILE SPECIMEN OF EUSAUROSPHARGIS DALSASSOI FROM THE ANISIAN (MIDDLE TRIASSIC) OF PIZ DA PERES (DOLOMITES, NORTHERN ITALY)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2020
The partial skeleton of a small tetrapod, collected from the lower Buchenstein Formation (uppermost Illyrian, Anisian Middle Triassic) of Piz da Peres (Northern Dolomites, Italy) is described.
SILVIO RENESTO   +2 more
doaj   +1 more source

A new species of Cymbospondylus (Diapsida, Ichthyosauria) from the Middle Triassic of Nevada and a re-evaluation of the skull osteology of the genus [PDF]

open access: yes, 2006
Figure 6. Drawing of the skull of Cymbospondylus nichollsi sp. nov. (FMNH PR2251) in ventral view. See Appendix for explanation of abbreviations. Scale bar = 10 cm.Published as part of Fröbisch, Nadia B., Sander, P. Martin & Rieppel, Olivier, 2006, A new
NADIA B. FRÖBISCH   +5 more
core   +1 more source

Reassessment of the evidence for postcranial skeletal pneumaticity in Triassic archosaurs, and the early evolution of the avian respiratory system. [PDF]

open access: yes, 2012
Uniquely among extant vertebrates, birds possess complex respiratory systems characterised by the combination of small, rigid lungs, extensive pulmonary air sacs that possess diverticula that invade (pneumatise) the postcranial skeleton, unidirectional ...
Barrett, Paul M.   +9 more
core   +1 more source

Growth patterns, sexual dimorphism, and maturation modeled in Pachypleurosauria from Middle Triassic of central Europe (Diapsida: Sauropterygia) [PDF]

open access: yesFossil Record, 2018
Bone tissue, microanatomy, and growth are studied in humeri of the pachypleurosaurs Dactylosaurus from the early Anisian of Poland and of aff. Neusticosaurus pusillus from the Lettenkeuper (early Ladinian) of southern Germany.
N. Klein, E. M. Griebeler
doaj   +1 more source

Figure 1 in A new species of Cymbospondylus (Diapsida, Ichthyosauria) from the Middle Triassic of Nevada and a re-evaluation of the skull osteology of the genus [PDF]

open access: yes, 2006
Figure 1. Holotype of Cymbospondylus nichollsi sp. nov., specimen FMNH PR2251 in lateral (A), dorsal (B) and ventral (C) view. C shows the upper surface of the specimen as found in the field. Note the sharp bend in the cervical vertebral column.
Sander, P. Martin   +2 more
core   +1 more source

New fossil unveils the dentary anatomy of the rare lepidosauromorph Cargninia enigmatica from the Upper Triassic of Southern Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract Nowadays, Lepidosauria is a diverse group represented by squamates and the rhynchocephalian tuatara. However, their origins date back to the end of the Permian Period, when the stem lineages Lepidosauromorpha and Archosauromorpha diverged. Within the lepidosauromorph stem lineage, a few species have been described with unstable phylogenetic ...
Lísie Vitória Soares Damke   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy