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Hemiaster californicus
Taxonomy
Hemiaster californicus was named by Clark (1891). Its type specimen is USNM 31203 and is a 3D body fossil. Its type locality is Redding, which is in a Turonian marine horizon in the Redding Formation of California.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1891 | Hemiaster californicus Clark |
| 1915 | Hemiaster californicus Clark and Twitchell p. 96 |
| 1920 | Hemiaster californicus Kew pp. 145 - 146 figs. Plate 40, figures 4a, 4b, 4c |
| 1938 | Hemiaster californicus Grant and Hertlein p. 117 |
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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 californicus Clark 1891
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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: Turonian or 93.90000 to 89.80000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Turonian | USA (California) | Hemiaster californicus (80931 80932 type locality: 203437) | |
| Turonian - Santonian | USA (California) | Hemiaster californicus (80943) |