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Ceramaster
Taxonomy
Ceramaster was named by Verrill (1899) [Sepkoski's age data: K Maes]. It is extant.
It was assigned to Goniasterinae by Spencer and Wright (1966); to Goniasteridae by Verrill (1899) and Clark and Downey (1992); and to Valvatida by Sepkoski (2002).
It was assigned to Goniasterinae by Spencer and Wright (1966); to Goniasteridae by Verrill (1899) and Clark and Downey (1992); and to Valvatida by Sepkoski (2002).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1895 | Petalastrum de Gregorio p. 4 |
| 1899 | Ceramaster Verrill p. 161 |
| 1966 | Ceramaster Spencer and Wright p. U57 |
| 1992 | Ceramaster Clark and Downey p. 232 |
| 2002 | Ceramaster Sepkoski |
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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. Ceramaster Verrill 1899
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†Ceramaster brandenensis Rasmussen 1951
†Ceramaster chantrei de Loriol 1895
†Ceramaster obtusus Rasmussen 1972
†Ceramaster polonicus Nosowska 1997
†Ceramaster rabii von Linstow 1909
Invalid names: Petalastrum de Gregorio 1895 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. M. Clark and M.E. Downey 1992 | A genus of Goniasteridae with pentagonal body form; arms normally five, short; abactinal plate tubulate, covered with granules (perpheral granules frequently rectangular), no secndary plates (or, if present, confined to disc); papulae in rectangular readial pattern; both series of marginal plate large, blockwise; actinal plates covered with granules, actinal area more or les extensive, adambulacral granulation not crowded, second row of subambulacral granules similar to actinal granules; madrepoite small, rhombic. |
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 Late/Upper Kimmeridgian to the top of the Badenian or 155.70000 to 12.70000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Kimmeridgian | France | C. chantrei (58209) | |
| Oligocene | Germany (Sachsen-Anhalt) | C. brandenensis (32013) | |
| Chattian | Germany (Mecklenburg-Vorpommern) | C. brandenensis (32012) | |
| Langhian | Romania | C. sp. (96784) | |
| Badenian | Poland | C. polonicus (126551) | |
| Badenian | Belgium | C. polonicus (95167) |