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Sphaerexochus dimorphus
Taxonomy
Sphaerexochus dimorphus was named by Whittington and Evitt (1953). It is not extant. Its type specimen is USNM 116508.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1953 | Sphaerexochus dimorphus Whittington and Evitt pp. 87-92 figs. pl. 17 f. 28-51; pl. 20; pl. 21 f. 1-4; |
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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 dimorphus Whittington and Evitt 1953
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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: Hendy 2009, Harrington et al. 1959, Aberhan et al. 2004 | |||||
Age range: base of the Llandovery to the top of the Gorstian or 443.10000 to 425.00000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Llandovery | Canada (Northwest Territories) | Sphaerexochus dimorphus (26046) | |
| Llandovery - Wenlock | Canada (Northwest Territories) | Sphaerexochus dimorphus (26034 26041 26047) | |
| Sheinwoodian | Canada (Northwest Territories) | Sphaerexochus dimorphus (26004 26005 26006) | |
| Sheinwoodian | Canada (Nunavut) | Sphaerexochus dimorphus (26003) | |
| Wenlock | Greenland | Sphaerexochus dimorphus (188490) | |
| Whitwellian | Canada (Northwest Territories) | Sphaerexochus dimorphus (26035 26042 26048 26050) | |
| Gorstian | Canada (Nunavut) | Sphaerexochus dimorphus (26008) |