| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Opisthonema
Taxonomy
Opisthonema was named by Gill (1862) [Sepkoski's age data: T Ol-l R Sepkoski's reference number: 915]. It is extant.
It was assigned to Clupeiformes by Sepkoski (2002); and to Clupeidae by David (1943), Constantin (1999), Fierstine et al. (2012).
It was assigned to Clupeiformes by Sepkoski (2002); and to Clupeidae by David (1943), Constantin (1999), Fierstine et al. (2012).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1862 | Opisthonema Gill |
| 1943 | Opisthonema David p. 84 |
| 1999 | Opisthonema Constantin |
| 2002 | Opisthonema Sepkoski |
| 2012 | Opisthonema Fierstine et al. p. 25 |
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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, subp = subphylum | |||||
| References: Carroll 1988, Hendy et al. 2009, Kiessling 2004 | |||||
Age range: base of the Rupelian to the top of the Barstovian or 33.90000 to 12.50000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rupelian | Romania | O. periscum (113962) | |
| Barstovian | USA (California) | O. palosverdensis (85313) |