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The shoulder girdle of Panderichthys rhombolepis (Gross) (Crossopterygii); Upper Devonian; Latvia
Abstract The shoulder girdle of Panderichthys rhombolepis ( Gross ) shows a complex of tetrapod-like; fish-like and specialized features. The scapulocoracoid; which is located very ventrally; has twoExpand
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Developmental Pattern and Morphology of Salamandrella keyserlingii Limbs (Amphibia, Hynobiidae) Including Some Evolutionary Aspects
In this paper, we consider the pattern of skeletal development and morphology in the limbs of the hynobiid species, Salamandrella keyserlingii , with the overall aim of analyzing tetrapod limbExpand
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A new species of Laccognathus (Porolepiform Crossopterygii) from the Devonian of Latvia
A new species of the genus Laccognathus, L. grossi sp. nov., from the upper strata of the Gauja Formation of the Main Devonian Field (Lode locality, Latvia) is established. Morphological similarityExpand
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The fin-limb transition andsarcopterygian relationships
Abstract Based on recent morphological and developmental data on paired fin/limbs we propose a common morphogenetic basis to the sarcopterygians; and attempt explanation of their evolutionaryExpand
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Developmental basis of limb homology in urodeles: heterochronic evidence from the primitive hynobiid family.
The vertebrate limb is a classic example of homology, long assumed to be underpinned by a developmental 'bauplan' of the type proposed in the Shubin/Alberch branching and segmenting model. In theExpand
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The Fin-Limb Transformation: Palaeontological and Embryological Evidence
The problem of the protetrapod pentadactyl limb still remains under discussion. Different forms among sarcopterygians have been claimed to possess the archetype of such a limb (Jarvik, 1980; Rosen etExpand
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Some Pecularities of Development in Two Populations of Salamandrella keyserlingii (Hynobiidae, Caudata)
We compared limb development and some other developmental features of Salamandrella keyserlingii in the Urals (Sverdlovkskaya region) and in the Far East (Ussuriisk district) from active feedingExpand
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