| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Hexuraster
Taxonomy
Hexuraster was named by Jell and Theron (1999). It is not extant. Its type is Hexura weitzi.
It was assigned to Cheiropterasteridae by Jell and Theron (1999).
It was assigned to Cheiropterasteridae by Jell and Theron (1999).
Species
Synonyms
|
Synonymy list
| Year | Name and author |
|---|---|
| 1950 | Hexura Spencer |
| 1999 | Hexuraster Jell and Theron p. 162 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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. †Hexuraster Jell and Theron 1999
show all | hide all
†Hexuraster weitzi Spencer 1950
Invalid names: Hexura Spencer 1950 [replaced]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. A. Jell and J. N. Theron 1999 | Body large; disc uncalcified, extending to arm tips. Arms slightly petaloid. Ambulacrals cylindrical with lateral projection (or toe of boot) shorter than radial length. Adambulacrals wide (ad-ab), expanded abradially to be T-shaped, with single very strong lateral spine on each adambulacral. Madreporite interradial, close to mouth frame on ventral surface. Mouth frame small for size of animal, plates not massive, with well-developed podial basin on 2nd ambulacral. Mouth large, with short buccal slit between 1st 2 ambulacrals. |