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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Eokainaster
Taxonomy
Eokainaster was named by Blake (1981) [Sepkoski's age data: J Oxfo Sepkoski's reference number: 338]. It is not extant. Its type is Astropecten pewei.
It was assigned to Astropectinidae by Blake (1981); and to Paxillosida by Sepkoski (2002).
It was assigned to Astropectinidae by Blake (1981); and to Paxillosida by Sepkoski (2002).
Species
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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 | |
|---|---|---|
| D. B. Blake 1981 | Astropectinid with small disc; five triangular, pointed arms; abactinals paxilliform, stout, marginals stout, fascioles angular, deep; two pair of marginals in each interbrachium; spines absent on superomarginals; inferomarginals little wider than superomarginals, bearing spines; actinal intermediates restricted to disc, apparently few in number; ambulacral - adambulacral articulation structures symmetrical. |
Measurements
No measurements are available
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| Source: f = family, c = class, p = phylum | |||||
| References: Blake 1990, Aberhan et al. 2004, Aberhan 1992 | |||||
Age range: base of the Late/Upper Callovian to the top of the Early/Lower Oxfordian or 164.70000 to 155.70000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Callovian - Early/Lower Oxfordian | USA (Wyoming) | E. pewei (59841) |