| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Paractinoceras
Taxonomy
Actinoceras (Paractinoceras) was named by Hyatt (1900).
It was reranked as Paractinoceras by Teichert et al. (1964), Crick (1981), Sepkoski (2002).
It was assigned to Actinoceras by Hyatt (1900); to Actinoceratidae by Teichert et al. (1964), Crick (1981); and to Actinocerida by Sepkoski (2002).
It was reranked as Paractinoceras by Teichert et al. (1964), Crick (1981), Sepkoski (2002).
It was assigned to Actinoceras by Hyatt (1900); to Actinoceratidae by Teichert et al. (1964), Crick (1981); and to Actinocerida by Sepkoski (2002).
Subtaxa
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1900 | Actinoceras (Paractinoceras) Hyatt p. 525 |
| 1964 | Paractinoceras Teichert et al. p. 204 |
| 1981 | Paractinoceras Crick p. 227 |
| 2002 | Paractinoceras Sepkoski |
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004 | |||||
Age range: base of the Edenian to the top of the Richmondian or 451.00000 to 445.50000 Ma
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Ordovician - Late/Upper Ordovician | Canada (Manitoba) | P. sp. (24165) | |
| Late/Upper Ordovician | USA (Wyoming) | P. sp. (24167) | |
| Katian | Russian Federation (Siberia) | P. canadensis (232332) | |
| Edenian | Canada (Manitoba) | Sactoceras canadensis (233802) | |
| Edenian | Canada (Northwest Territories) | P. canadense (26340) | |
| Edenian - Richmondian | Canada (Manitoba) | P. canadense (13654) | |
| Maysvillian | USA (Virginia) | P. lamellosum (5396 5399) | |
| Richmondian | Canada (Nunavut) | P. canadense, P. sp. (24124) | |
| Richmondian - Gamachian | Canada (Manitoba) | P. churchillense (23026) |