Results 81 to 90 of about 383 (172)

Figure 6. Basisphenoid-parasphenoid complex. A, stereo pair with left anterolateral view. B, stereo pair with dorsoposterior view. C in The braincase and middle ear region of Dendrerpeton acadianum (Tetrapoda: Temnospondyli) [PDF]

, 2005
Figure 6. Basisphenoid-parasphenoid complex. A, stereo pair with left anterolateral view. B, stereo pair with dorsoposterior view. C, ventral view. Basisphenoid in darker shading, parasphenoid in lighter shading.
Ahlberg, P. E., Robinson, J., Koentges, G.   +2 more
core   +1 more source

Evolution of the tetrapod skull: a systematic review of bone loss [PDF]

Fossil Record
The simplification of the tetrapod skull occurred convergently in various tetrapod lineages from the Devonian into the Mesozoic, leading to some groups (e.g. lissamphibians) to retain only 19 of the original 41 dermal roof bones present in stem-tetrapods.
Kim Julia Kean, Marylène Danto, Celeste Pérez-Ben, Nadia Belinda Fröbisch   +3 more
doaj   +3 more sources

Regularities in Phenotypic Variation as a Property of the Developmental System: Evidence from the Evolution of Early Amphibians [PDF]

, 2018
An evident non-randomness in the variability of living organisms is caused by the integrity of their developmental systems, which undergo the evolutionary transformation as a whole.
Shishkin, M. A., Shishkin, M A
core   +1 more source

The otic region ofDoleserpeton(Temnospondyli) and its implications for the evolutionary origin of frogs [PDF]

Zoological Journal of the Linnean Society, 2008
There is increasing evidence that the Palaeozoic temnospondyl amphibians had a frog-like tympanic hearing system. For this reason, the otic region of Doleserpeton is described and compared with modern anurans. The otic capsules are expanded laterally and ventrally relative to other temnospondyls.
openaire   +1 more source

Trematopidae WILLISTON 1910 [PDF]

, 2011
TREMATOPIDAE WILLISTON, 1910 Revised diagnosis: The clade consisting of Acheloma cumminsi and all other taxa that share a more recent common ancestor with Ach. cumminsi than with Dissorophus.Published as part of Polley, Brendan P.
Reisz, Robert R., Polley, Brendan P.
core   +1 more source

Acheloma COPE 1882 [PDF]

, 2011
ACHELOMA COPE, 1882 Revised generic diagnosis: Large trematopid temnospondyl characterized by the following autapomorphies: toothed, raised crest running anteroposteriorly along the vomer, mesial to the choana; otic notch with a nearly horizontal ...
Reisz, Robert R., Polley, Brendan P.
core   +1 more source