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Dolichozygus
Taxonomy
Dolichozygus was named by Cooper (1983) [Sepkoski's age data: T Plio R Sepkoski's reference number: 882]. It is extant. Its type is Terebratula stearnsi.
It was assigned to Terebratulida by Sepkoski (2002); and to Tichosininae by Williams et al. (2006).
It was assigned to Terebratulida by Sepkoski (2002); and to Tichosininae by Williams et al. (2006).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1983 | Dolichozygus Cooper p. 253 |
| 2002 | Dolichozygus Sepkoski |
| 2006 | Dolichozygus Williams et al. p. 2059 |
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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
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 4 | 17.2 | 13.5 | 19.7 | 18.2 | 2.69 |
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| Source: f = family, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range
Maximum range based only on fossils: base of the Gelasian to the top of the Calabrian or 2.58000 to 0.77400 Ma
Minimum age of oldest fossil (stem group age): 1.8 Ma
Minimum age of oldest fossil (stem group age): 1.8 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gelasian | Japan (Okinawa) | Gryphus stearnsi (42180 42237) | |
| Calabrian | Japan (Okinawa) | Gryphus stearnsi (190264) | |
| Calabrian - Middle Pleistocene | Japan (Okinawa) | Gryphus stearnsi (190214) |