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Tretosternon
Taxonomy
Tretosternon was named by Owen (1842). Its type is Tretosternon punctatum.
It was assigned to Emydidae by Owen (1842); to Tretosterninae by Lydekker (1889); to Pleurosternidae by Delair (1958); to Helochelydrinae by Kuhn (1966); and to Dermatemydidae by Borsuk-Bialynicka and Mlynarski (1968), Mlynarski (1984) and Carroll (1988).
It was assigned to Emydidae by Owen (1842); to Tretosterninae by Lydekker (1889); to Pleurosternidae by Delair (1958); to Helochelydrinae by Kuhn (1966); and to Dermatemydidae by Borsuk-Bialynicka and Mlynarski (1968), Mlynarski (1984) and Carroll (1988).
Synonymy list
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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.
G. †Tretosternon Owen 1842
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||
Age range: base of the Early/Lower Berriasian to the top of the Late/Upper Hauterivian or 145.00000 to 130.00000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Berriasian - Middle Berriasian | United Kingdom (England) | T. sp. (28401) | |
| Early/Lower Berriasian - Middle Berriasian | France (Poitou-Charentes) | Tretosternum sp. (61930) | |
| Late/Upper Valanginian | United Kingdom (England) | T. sp. (96621) | |
| Late/Upper Hauterivian | United Kingdom (England) | T. sp. (62637 119697) |