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Protothyraster
Taxonomy
Protothyraster was named by Hess (1970) [Sepkoski's age data: K Haut-u]. It is not extant. Its type is Rhopia prisca.
It was assigned to Echinasteridae by Hess (1970); to Asteroidea by Sepkoski (2002); to Forcipulatida by Gale (2011); and to Zorocallida by Fau and Villier (2023).
It was assigned to Echinasteridae by Hess (1970); to Asteroidea by Sepkoski (2002); to Forcipulatida by Gale (2011); and to Zorocallida by Fau and Villier (2023).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1970 | Protothyraster Hess |
| 2002 | Protothyraster Sepkoski |
| 2011 | Protothyraster Gale p. 60 |
| 2023 | Protothyraster Fau and Villier p. 8 |
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Aberhan 1992 | |||||
Age range: Late/Upper Hauterivian or 136.40000 to 130.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Hauterivian | Switzerland (Neuchatel) | P. priscus (31986) |