| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Galbaster
Taxonomy
Galbaster was named by Villier et al. (2004). It is not extant. Its type is Galbaster recurrans. It was considered monophyletic by Villier et al. (2004).
It was assigned to Goniasteridae by Villier et al. (2004).
It was assigned to Goniasteridae by Villier et al. (2004).
Species
G. recurrans (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Galbaster Villier et al. p. 816 |
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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 | |
|---|---|---|
| L. Villier et al. 2004 | The arms terminate in differentiated ultimate plates or large penultimate and reduced ultimate superomarginal plates. If present, ultimate superomarginal plates are large, triangular in shape, and show a low and oval adradial face representing a third of plate length. Marginal plates (superomarginals as well as inferomarginals) are long (length greater than width), barrel shaped, outer face very
convex. Lateral faces irregular, oriented under an angle pointing adradially. The ornament varies from a network of small and dense to large and perforate tubercles. The lateral faces are relatively small, unequal and triangular. The largest lateral face is separated from the external face by a small rim. The abradial side of the marginal vertical or in slightly reflex angle. |
Measurements
No measurements are available
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| Source: f = family, c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Blake 1990, Aberhan 1992 | |||||
Age range: Middle Toarcian or 182.00000 to 175.60000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Toarcian | France (Poitou-Charentes) | G. recurrans (31839) |