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Taxonomy
Tavoonyia altaica was named by Ziegler et al. (2007). Its type specimen is NHMW 2006z0037/0001, a tooth (M1 sup. sin.), and it is not a trace fossil. Its type locality is Tavan Ovoony Deng, Taatsiin Gol Area, Valley of Lakes, Central Mongolia. Sample RHN-A/9, which is in an Oligocene terrestrial siltstone in the Loh Formation of Mongolia. It is the type species of Tavoonyia.
Synonymy list
Year | Name and author |
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2007 | Tavoonyia altaica Ziegler et al. p. 125 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Tavoonyia altaica Ziegler et al. 2007
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Diagnosis
Reference | Diagnosis | |
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R. Ziegler et al. 2007 | Crocidosoricine shrew. Root of I sup. without longitudinal lingual groove. M1 with rounded hypocone, a moderate distal emargination, and a distal cingulum only. 3 lower antemolars in front of p4; 3rd alveole in front of p4 with a mesial ridge. Lower molars with a weak lingual cingulid. In m1 the disto-labial edge of the protoconid is connected to the labial cingulum, in m2 the connection is ndistinct. First and second lower molar with high entocristid. m3 with somewhat mesio-distally compressed trigonid and without hypoconulid. |