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Morphology and systematics of the northern Dvina Cynodonts lReptiliac Therapsidas upper Permianr
The morphological peculiarities of this Northern Dvina cynodont justify its being set apart in a separate family Dviniidae related to the Procynosuchidae — the extremely primitive Cynodonts of South Africa.
Theriodonts of the USSR
A new genus and species of discoglossid frog from the Upper Cretaceous of the Gobi Desert
ABSTRACT Gobiates kermeentsavi, n. gen., n. sp., from the Cretaceous of the Gobi desert, Mongolian People's Republic, is characterized by a large fontanelle in the frontoparietal, a complete
New Late Permian Therocephalian
The well-preserved, acid-prepared skull of Moschowhaitsia vjuschkovi reveals a number of features unexpected in a theriodont of otherwise generally primitive aspect.
The morphology and functional significance of the sound-conducting mechanism of those labyrinthodont amphibians having a tympanic membrane are described. The close similarity of systems between the
A new occurrence of Permian Seymouriamorphs in the U.S.S.R.
A large number of specimens of Seymouriamorph amphibian, family Discosauriscidae, were collected from the south slopes of the Kuramanskiy Khrebet, Mt. Sarytaypan, 10 km northeast of the settlement of
[Molecular genetics and epigenetics in the morphogenesis mechanisms].
The theory of evolution should include not only the molecular processes but also the laws of ecosystem and biosphere processes, which study requires handling many problems of ecology, parasitology, palaeontology, and geology.
Commemorative biography of Academician Ivan Ivanovich Shmal'gauzen (Schmalhausen)
His research can be divided into four periods: evolution of vertebrate limbs and of the unpaired fins of fishes (1905-1922); experimental work on morphogene-Sis and growth (1923-1936); evolutionary theory, with emphasis on rate of evolution (1936-1948); and origin of land vertebrates, based in part on studies of amphibian embryology (1950-1963).