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Calliderma
Taxonomy
Calliderma was named by Gray (1847) [Sepkoski's age data: K Ceno-l R Sepkoski's reference number: 772]. It is extant.
It was assigned to Valvatida by Sepkoski (2002); and to Goniasteridae by Gray (1847), Spencer and Wright (1966), Breton (1992), Breton and Néraudeau (2008) and Blake and Ettensohn (2009).
It was assigned to Valvatida by Sepkoski (2002); and to Goniasteridae by Gray (1847), Spencer and Wright (1966), Breton (1992), Breton and Néraudeau (2008) and Blake and Ettensohn (2009).
Synonymy list
| Year | Name and author |
|---|---|
| 1847 | Calliderma Gray |
| 1966 | Calliderma Spencer and Wright p. U59 |
| 1992 | Calliderma Breton p. 293 |
| 2002 | Calliderma Sepkoski |
| 2008 | Calliderma Breton and Néraudeau p. 334 |
| 2009 | Calliderma Blake and Ettensohn p. 568 |
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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.
G. Calliderma Gray 1847
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Subg. †Calliderma (Mastaster) Wright and Wright 1940
†Calliderma atagensis Valette 1925
†Calliderma juigneti Breton 1988
†Calliderma moreaui Néraudeau and Breton 1993
†Calliderma smithiae Forbes 1848
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Invalid names: Calliderma latum Forbes 1848 [synonym], Goniaster (Astrogonium) mosaicus Forbes 1848 [synonym]
†Calliderma viaudi Breton 1988
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. Breton 1992 | Arms short, with a wide base and poorly differentiated from the disc. Interbrachial arc regularly rounded. Marginal plates short, with a maximum width at the interradius. Granule-pits fine, hexagonal, irregular in size and depth. Pedicellariae-pits rounded, oval, or winged-oval. |
Measurements
No measurements are available
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| Source: f = family, c = class, p = phylum | |||||
| References: Blake 1990, Aberhan 1992, Aberhan et al. 2004 | |||||
Age range: base of the Early/Lower Cenomanian to the top of the Ypresian or 99.60000 to 47.80000 Ma
Collections (19 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian | United Kingdom (England) | C. smithae (81061) | |
| Early/Lower Cenomanian | France | C. juigneti, C. smithiae (59658) C. smithiae (59613 59619) | |
| Early/Lower Cenomanian | United Kingdom | C. smithiae (59682 59711) | |
| Late/Upper Cenomanian | France | C. moreaui (59799 59811) C. smithiae (59806) | |
| Middle Cenomanian | France | C. juigneti (59611) | |
| Early/Lower Turonian | United Kingdom (England) | C. smithae (4071) C. smithiae (4072) | |
| Early/Lower Turonian | France | C. viaudi (59820) | |
| Coniacian | France | C. sp. (59650) | |
| Late/Upper Campanian | France | C. sp. (59676) | |
| Maastrichtian | France | C. smithiae (72285) | |
| Ypresian | France | C. atagensis (59787 59788 59789) |