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Sphaerexochus atacius
Taxonomy
Sphaerexochus atacius was named by Ludvigsen (1979) [Paratypes: GSC 40421, 44289-44301]. Its type specimen is GSC 40420, a cephalon/head (cranidium), and it is a 3D body fossil. Its type locality is Sunblood Range P-2038, which is in a Sandbian carbonate limestone in the Esbataottine Formation of Canada.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Sphaerexochus atacius Ludvigsen p. 42 figs. Pl. 19, figs. 36-38, 58 |
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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.
†Sphaerexochus atacius Ludvigsen 1979
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, c = class | |||||
| References: Aberhan et al. 2004, Harrington et al. 1959, Hendy 2009 | |||||
Age range: base of the Blackriveran to the top of the Sandbian or 457.30000 to 452.80000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Sandbian | Canada (Northwest Territories) | Sphaerexochus atacius (type locality: 102271) | |
| Blackriveran - Rocklandian | Canada (Northwest Territories) | Sphaerexochus atacius (24634) |