Tapashanitidae Temporal range: [1] | |
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Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | † Ammonoidea |
Order: | † Ceratitida |
Superfamily: | † Xenodiscoidea |
Family: | † Tapashanitidae Zhao, 1978 |
Genera | |
Tapashanitidae is an extinct family of cephalopods belonging to the Ammonite subclass in the order Ceratitida.
Tapashanites is a genus of ammonites in the family Tapashanitidae of the order Ceratitida. The genus is used as an index fossil for the Changhsingian stage of the Late Permian because its first appearance is only 42 cm (17 in) above the base of the Changhsingian