Results 41 to 50 of about 877 (172)
EVOLUTIONARY TRENDS IN TRIASSIC DICYNODONTIA [PDF]
Triassic Dicynodontia differ from most of their Permian ancestors in a number of specialisations that reach extremes in the Upper Triassic. These are ( 1) increase in total body size, (2) increase in the relative length of the snout and secondary ...
Keyser, A. W.
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Biological aspects of the Permian dicynodont Oudenodon (Therapsida: Dicynodontia) deduced from bone histology and cross-sectional geometry [PDF]
Main articleBone histology and cross-sectional geometry were used to examine the growth patterns and lifestyle habits of the Late Permian dicynodont, Oudenodon.
Botha, Jennifer
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A comparison of the palates of Permian and Triassic dicynodonts [PDF]
Main articleWhilst comparing the skulls of some Triassic dicynodonts with Permian members of the family, it was noted that the interpterygoid space in the former is consistently smaller than in the latter (Cruickshank 1965: 1967).
Cruickshank, A. R.
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Effective dispersal of fern spore and the ecological relevance of zoochory
ABSTRACT The mechanisms of fern dispersal are under‐studied and there are few data to support the vectors assumed to drive patterns of sporophyte occurrence and speciation. Although wind is generally the fern spore dispersal vector described in the literature, there has always been competing evidence supporting alternate vectors.
James M. R. Brock
wiley +1 more source
Dicynodonts and the end Permian event [PDF]
Patterns of diversity changes in several groups of Late Permian South African terrestrial tetrapods are examined. Using data contained in Kitching (1977), histograms are presented which illustrate changes in a) total number of tetrapod genera per ...
King, Gilian M
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XII. On the structure of the Dicynodont skull [PDF]
We propose in this communication to supplement our previous account of the Dicynodon ( D. leoniceps ? ) skull by some observations on another specimen of unknown species, for which we are indebted, through the kind offices of Dr. Smith Woodward, to the generosity of the Trustees of the British Museum.
openaire +1 more source
The neodiapsid Thadeosaurus colcanapi from the upper Permian of Madagascar
Abstract The enigmatic neodiapsid Thadeosaurus colcanapi (Lower Sakamena Formation, southwestern Madagascar), sole species of the genus Thadeosaurus, is revised here. The attribution of 12 of the 21 referred specimens is confirmed, spanning all ontogenetic stages, and the anatomy of Thadeosaurus is redescribed in detail with comments on ontogenetical ...
Valentin Buffa +3 more
wiley +1 more source
In this article, we have proposed a model for the origin of ferruginous coated grains in a continental rift setting. The association of these iron coated grains with limestones and sub‐aerially weathered microbialites have made them suitable for a comparative assessment of various hypotheses of solute supply and precipitation, which can be relevant for
Shantanu Datta +4 more
wiley +1 more source
The Dicynodontia (Therapsida: Anomodontia) is one of the most successful Permo-Triassic terrestrial tetrapod clades and the oldest specimens are recorded from the middle Permian Eodicynodon Assemblage Zone of South Africa. Their fossil record is abundant
Alienor Duhamel +5 more
doaj +1 more source
A new specimen of Dicynodon traquairi (Newton) (Synapsida: Anomodontia) from the Late Permian (Tartarian) of northern Scotland [PDF]
A recently discovered natural mould of a complete, almost undistorted, skull and lower jaw of a dicynodont (c. 237mmoverall length), in a block of Upper Permian sandstone (= Dicynodon Assemblage Zone: Hopeman Sandstone Formation) from Clashach Quarry ...
Adams, Calum +2 more
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