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Hsuum optimum
Taxonomy
Hsuum optimus was named by Carter et al. (1988). It is not extant. Its type locality is GSC loc. C-080579, Maude Island, which is in a Toarcian offshore shale in the Whiteaves Formation of Canada.
It was corrected as Hsuum optimum by Carter et al. (2010).
It was corrected as Hsuum optimum by Carter et al. (2010).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1988 | Hsuum optimus Carter et al. |
| 2010 | Hsuum optimum Carter et al. |
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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.
†Hsuum optimum Carter et al. 1988
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 1999 | |||||
Age range: base of the Late/Upper Pliensbachian to the top of the Aalenian or 189.60000 to 170.30000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Pliensbachian | Canada (British Columbia) | Hsuum optimum (119771 119773 119808) | |
| Late/Upper Pliensbachian | Canada (British Columbia) | Hsuum optimum (71080) | |
| Middle Toarcian | Canada (British Columbia) | Hsuum optimus (type locality: 71084 71090) | |
| Middle Toarcian - Late/Upper Toarcian | Canada (British Columbia) | Hsuum optimus (71094 71095 71096 71098) | |
| Aalenian | Canada (British Columbia) | Hsuum optimus (71127) |