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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Echinosphaeraster
Taxonomy
Echinosphaeraster was named by Gale (2021). It is not extant. Its type is Asterias scutata. It was considered monophyletic by Gale (2021).
It was assigned to Sphaerasteridae by Gale (2021).
It was assigned to Sphaerasteridae by Gale (2021).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2021 | Echinosphaeraster Gale p. 704 |
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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
| Reference | Diagnosis | |
|---|---|---|
| A.S. Gale 2021 | A sphaerasterid in which the large abactinal ossicles of the abactinal surface each carry a tall, conical, centrally placed spine on a raised, crater-shaped circular facet. A small number (approximatey 50) of large abactinal plates, of similar breadth, are present
between the ambitus and the primary circlet, set in four rows per radius. The primary circlet is broad and extends across half the diameter of the abactinal surface. The abactinal surface forms a low dome, and the actinal surface is flat. |
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Aberhan 1992, Aberhan et al. 2004 | |||||
Collections
No collection or age range data are available