Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Hemiaster calvini
Taxonomy
Hemiaster calvini was named by Clark (1893).
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1893 | Hemiaster calvini Clark p. 90 |
1915 | Hemiaster calvini Clark and Twitchell p. 91 |
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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.
†Hemiaster calvini Clark 1893
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class, p = phylum | |||||
References: Aberhan 1992, Kiessling 2004 |
Age range: Early/Lower Cenomanian or 99.60000 to 93.50000 Ma
Collections (2 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Early/Lower Cenomanian | Mexico (Coahuila de Zaragoza) | Hemiaster calvini (88218) | |
Early/Lower Cenomanian | USA (Texas) | Hemiaster calvini (88748) |