| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Hessaster
Taxonomy
Hessaster was named by Gale (2011). Its type is Hessaster longimarginalis.
It was assigned to Goniasteridae by Gale (2011).
It was assigned to Goniasteridae by Gale (2011).
Species
H. longimarginalis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2011 | Hessaster Gale p. 79 |
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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 2011 | A goniasterid which possesses elongated, unpaired, pentagonal interradial marginals, elongated, narrow, second and third marginals, and distally progressively shorter marginals. Superomarginals smooth, inferomarginals with sculpture of coarse rugosites and intervening granule pits. |
Measurements
No measurements are available
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| Source: f = family, c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Aberhan 1992, Blake 1990 | |||||
Age range: Late/Upper Oxfordian or 161.20000 to 155.70000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Oxfordian | France | H. longimarginalis (61724) |