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Migmaster angularis
Taxonomy
Migmaster angularis was named by Blake et al. (2006). Its type specimen is Holotype MHI 1809, paratypes MHI 1806, MHI 1807, MHI 1808, a skeleton, and it is a 3D body fossil. Its type locality is Elvese near Göttingen, Asteroid, which is in a Pelsonian shallow subtidal limestone in the Jena Formation of Germany. It is the type species of Migmaster.
Synonymy list
Year | Name and author |
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2006 | Migmaster angularis Blake et al. p. 286 figs. Figs. 3A-F, H, 4A-C |
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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.
†Migmaster angularis Blake et al. 2006
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Diagnosis
Reference | Diagnosis | |
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D. B. Blake et al. 2006 | Trichasteropsiid with ossicles of dorsal surface not differentiated in a manner that would indicate a vaulted profile in life. Arms triangular, straightsided; disk large. Abactinal ossicles (at least of smaller specimens) more or less paxilliform, carinals and primary circlet not clearly recognized. Marginals of smaller individuals
uniform, tabular, those of larger individual enlarged distally, becoming proportionately reduced proximally, but distal marginals not enlarged as to alter form of the arm. Actinal series alignment probably parallel to marginal series. Axillary or axillary-like ossicle present. Spines simple, pointed. |
Measurements
No measurements are available
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Source: c = class, p = phylum | |||||
References: Aberhan et al. 2004, Aberhan 1992 |
Age range: Pelsonian or 247.20000 to 242.00000 Ma
Collections (2 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Pelsonian | Germany (Nordrhein-Westfalen) | Migmaster angularis (59967) | |
Pelsonian | Germany (Niedersachsen) | Migmaster angularis (type locality: 66894) |