| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Pentasteria liasica
Taxonomy
Pentasteria liasica was named by Villier et al. (2004). It is not extant. Its type specimen is Holotype MHNH 9003, paratype 9004-9007. Its type locality is Echinodermata, Marls of the Variabilis zone, Thouars, which is in a Toarcian offshore marl in France. It was considered monophyletic by Villier et al. (2004).
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Pentasteria liasica Villier et al. p. 818 figs. 3.1–7, 4.10, 4.11 |
| 2011 | Pentasteria liasica Gale p. 57 |
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.
†Pentasteria liasica Villier et al. 2004
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. Villier et al. 2004 | Marginal plates are bordered by shallow lateral fascioles. Inferomarginal plates show a rectangular andhooked profile. The ornament consists of a network of rounded tubercles. Two rows of tubercles occur on the abradial side one of those made up of enlarged horseshoe-shaped tubercles. Abradial tubercle rows may be prolonged on the abactinal side by an alignment of enlarged tubercles. Superomarginal plates are square, nearly as long as wide in the arms. The external face is slightly convex and covered by tubercles smaller those of inferomarginals. The faces articulated with the abactinal plates are vertical to oblique. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|||||
|
|
||||
|
|
||||
| Source: f = family, c = class, p = phylum | |||||
| References: Aberhan 1992, Blake 1990, Aberhan et al. 2004 | |||||
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) | Pentasteria liasica (type locality: 31839) |