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Micracanthoceras spinulosum
Taxonomy
Berriasella spinulosa was named by Gerth (1925).
It was recombined as Micracanthoceras spinulosum by Salazar and Stinnesbeck (2016).
It was recombined as Micracanthoceras spinulosum by Salazar and Stinnesbeck (2016).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1925 | Berriasella inaequicostata Gerth |
| 1925 | Berriasella spinulosa Gerth |
| 2016 | Micracanthoceras spinulosum Salazar and Stinnesbeck p. 169 fig. 17 |
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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.
†Micracanthoceras spinulosum Gerth 1925
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Invalid names: Berriasella inaequicostata Gerth 1925 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 10 | 9.52 | 6.70 | 15.1 | 9.40 | 2.83 | |
| shell diameter | 10 | 30.1 | 23.1 | 37.2 | 31.8 | 5.18 | |
| shell inflation | 10 | 15.1 | 11.4 | 17.8 | 15.9 | 2.34 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Late/Upper Tithonian or 145.06000 to 143.10000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tithonian | Argentina (Mendoza) | Berriasella spinulosa (137136) | |
| Late/Upper Tithonian | Chile | Micracanthoceras spinulosum (90557 151662) | |
| Late/Upper Tithonian - Early/Lower Berriasian | Chile | Micracanthoceras spinulosum (151660 151663) |