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Rachitomi
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High Quality Content by WIKIPEDIA articles! The Rachitomi were a group of extinct Palaeozoic labyrinthodont amphibians, according to an earlier classification system. Abyrinthodontia is an older term for any member of the extinct subclass of amphibians, which constituted some of the dominant animals of Late Paleozoic and Early Mesozoic times (about 390 to 210 million years ago). The group is ancestral to all extant landliving vertebrates, and as such constitute an evolutionary grade rather than a clade. The name describes the pattern of infolding of the dentine and enamel of the teeth, which are often the only part of the creatures that fossilize. They are also distinguished by a heavily armoured skull roof (and therefore often named "Stegocephalia"), and complex vertebrae, the structure of which is useful in older classifications of the group.
Weitere Informationen
- Allgemeine Informationen
- Titel Rachitomi
- Format Fachbuch
- EAN 9786131073182
- Herausgeber Betascript Publishing
- Anzahl Seiten 124
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- Genre Geschichte
- GTIN 09786131073182
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