Literaturdatenbank
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de Lapparent Broin, F. D., Bour, R., & Perälä, J. (2006). Morphological definition of eurotestudo (testudinidae, chelonii): first part. Annales de Paléontologie, 92(3), 255–304.
Added by: Admin (14 Aug 2008 20:32:47 UTC) |
| Resource type: Journal Article BibTeX citation key: deLapparentBroin2006b View all bibliographic details  |
Categories: General Keywords: Schildkröten = turtles + tortoises, Systematik = taxonomy, Testudinidae, Testudo, Testudo hermanni Creators: Bour, de Lapparent Broin, Perälä Collection: Annales de Paléontologie |
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| Abstract |
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Testudinidae This work details the morphological analysis upon which the creation of the testudinid genus Eurotestudo was based. The study is presented in two parts. The present first part includes an introduction to the subject, and the morphological data with illustrations, which formed the basis for the analysis. The results and lists of cited taxa appear in the second part (Ann. Pal., 92, 4). The analysis rests on a limited number of selected characters, principally those derived from shell osteology, which are preserved in fossils as well as in living specimens. Within the palaearctic genus Testudo s.l., Eurotestudo was separated from two other inclusive genera, Agrionemys and Testudo s.s. In a cladistic analysis, Eurotestudo is distinguished by the autapomorphy of the narrowing vertebrals. Several more external characters (not derivable from fossils and thus omitted from the present cladistic analysis) also support the existence of the genus. Eurotestudo shares homoplastic characters with the two other lineages, the frequency and the evolutionary degree of which vary according to species in the two other genera. Further osteological characters and characters known only from living specimens are added to the osteological study. The characters are examined on a series of taxa chosen among the better known fossil forms from the Oligocene to the Present, Quaternary forms of the Eu. hermanni group included, and representative extant forms. Possible members of the three stems are examined. The autapomorphies of each stem are evidenced, the polarization of characters is tested and the homoplasies are detected. The hypothesis of a common origin for Testudo and Eurotestudo has best support in the present analysis.
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WIF
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