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Chinianaster
Taxonomy
Chinianaster was named by Thoral (1935) [Sepkoski's age data: O Aren-l Sepkoski's reference number: 805]. It was considered monophyletic by Dean Shackleton (2005).
It was assigned to Goniactinida by Sepkoski (2002); to Chinianasteridae by Spencer (1951), Owen (1965), Spencer and Wright (1966), Dean Shackleton (2005) and Blake and Guensburg (2015); and to Somasteroidea by Blake (2013) and Blake (2018).
It was assigned to Goniactinida by Sepkoski (2002); to Chinianasteridae by Spencer (1951), Owen (1965), Spencer and Wright (1966), Dean Shackleton (2005) and Blake and Guensburg (2015); and to Somasteroidea by Blake (2013) and Blake (2018).
Species
Synonymy list
Year | Name and author |
---|---|
1935 | Chinianaster Thoral p. 127 |
1951 | Chinianaster Spencer p. 98 |
1965 | Chinianaster Owen p. 543 |
1966 | Chinianaster Spencer and Wright p. U39 |
2002 | Chinianaster Sepkoski |
2005 | Chinianaster Dean Shackleton p. 68 |
2013 | Chinianaster Blake p. 363 |
2015 | Chinianaster Blake and Guensburg p. 467 |
2018 | Chinianaster Blake p. 21 |
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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 | |
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W. K. Spencer 1951 | A chinianasterid with large ambulacral basins placed on the oral surface and separated by mid-radial open channel | |
J. Dean Shackleton 2005 | Ambulacral proximal podial flange with tongue overlapping distal flange; transverse contact between adjacent ambulacrals overlapping; pores present within large ambulacral groove; ambulacral cross-section rectangular (flat aboral ambulacral profile); greater than two inferomarginal ossicles per ambulacral over entire arm. |
Measurements
No measurements are available
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Source: o = order, subc = subclass, p = phylum | |||||
References: Aberhan et al. 2004, Aberhan 1992, Spencer and Wright 1966 |
Collections (4 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Tremadocian | France (Languedoc-Roussillon) | C. levyi (101705) | |
Arenig | France (Montagne Noire) | C. levyi (20828) | |
Floian | France (Montagne Noire) | C. levyi (20827) | |
Fennian | France (Montagne Noire) | C. sp. (20825) |