Abstract:
:The skull of neotenic individuals of the Alpine Newt Triturus alpestris from the locality Drakolimni (Greece) is described on the basis of models made from magnified serial frontal sections. In order to recognize features associated with neoteny and paedomorphosis, the results were compared with normal development of contemporary Triturus and of other Caudata. The neotenic larvae from Greece correspond to advanced stages of metamorphosis in normal development of Triturus alpestris. Comparison with salamandrids from the Tertiary of Europe in which the hyobranchial skeleton was preserved, namely Brachycormus noachicus, Chelotriton paradoxus, and Palaeopleurodeles hauffi, revealed that both latter taxa were completely metamorphosed adults anatomically similar to their contemporary relatives Tylototriton, Echinotriton, and Pleurodeles, whereas Brachycormus, though apparently related to Chelotriton, was a neotenic amphibian. This is suggested by its incompletely metamorphosed but ossified hyobranchial skeleton. © 1996 Wiley-Liss, Inc.
journal_name
J Morpholjournal_title
Journal of morphologyauthors
Roček Zdoi
10.1002/(SICI)1097-4687(199611)230:2<187::AID-JMORsubject
Has Abstractpub_date
1996-11-01 00:00:00pages
187-197issue
2eissn
0362-2525issn
1097-4687journal_volume
230pub_type
杂志文章abstract::During ontogeny, the apical and basal components of dicamptodontid teeth exhibit three major developmental stages: nonpedicellate, subpedicellate, and pedicellate. Premetamorphic larvae tend to have nonpedicellate teeth, incompletely or recently metamorphosed individuals tend to have subpedicellate teeth, and fully tr...
journal_title:Journal of morphology
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journal_title:Journal of morphology
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journal_title:Journal of morphology
pub_type: 杂志文章
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更新日期:2008-09-01 00:00:00
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journal_title:Journal of morphology
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更新日期:2019-05-01 00:00:00