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Dviniidae
Taxonomy
Dviniidae was named by Tatarinov (1968). It is not extant.
It was synonymized subjectively with Procynosuchidae by Hopson and Kitching (1972).
It was assigned to Cynodontia by Battail and Surkov (2000); and to Procynosuchia by Kemp (1982), Carroll (1988) and Tatarinov (2008).
It was synonymized subjectively with Procynosuchidae by Hopson and Kitching (1972).
It was assigned to Cynodontia by Battail and Surkov (2000); and to Procynosuchia by Kemp (1982), Carroll (1988) and Tatarinov (2008).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1968 | Dviniidae Tatarinov |
| 1982 | Dviniidae Kemp p. 349 |
| 1988 | Dviniidae Carroll |
| 2000 | Dviniidae Battail and Surkov |
| 2008 | Dviniidae Tatarinov |
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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: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Carroll 1988 | |||||
Age range: base of the Late/Upper Severodvinian to the top of the Vyatkian or 264.28000 to 257.40000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Severodvinian - Vyatkian | Russian Federation (Arkhangelsk) | Dvinia prima, Permocynodon sushkini (28065) |