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Heterocrisina
Taxonomy
Heterocrisina was named by Gabb and Horn (1860) [Sepkoski's age data: K Ceno-u T Than Sepkoski's reference number: 626].
It was assigned to Cytididae by Bassler (1953); and to Cyclostomata by Sepkoski (2002).
It was assigned to Cytididae by Bassler (1953); and to Cyclostomata by Sepkoski (2002).
Synonymy list
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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.
G. †Heterocrisina Gabb and Horn 1860
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class, uc = unranked clade | |||||
| References: Smith et al. 2006, Nesnidal et al. 2013 | |||||
Age range: Late/Upper Santonian or 85.70000 to 83.60000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Santonian | Germany | H. communis (220829) |