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Preophidion
Taxonomy
Preophidion was named by Frizzell and Dante (1965).
It was assigned to Ophididae by Frizzell and Dante (1965), Schwarzhans (2007); to Sirembinae by Schwarzhans and Bratischko (2011); and to Ophidiidae by Ebersole et al. (2019).
It was assigned to Ophididae by Frizzell and Dante (1965), Schwarzhans (2007); to Sirembinae by Schwarzhans and Bratischko (2011); and to Ophidiidae by Ebersole et al. (2019).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1965 | Preophidion Frizzell and Dante p. 713 |
| 2007 | Preophidion Schwarzhans p. 326 |
| 2011 | Preophidion Schwarzhans and Bratischko p. 94 |
| 2019 | Preophidion Ebersole et al. p. 197 |
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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. †Preophidion Frizzell and Dante 1965
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†Preophidion convexus Stinton 1977
†Preophidion meyeri Koken 1888
†Preophidion petropolis Frizzell and Dante 1965
†Preophidion stintoni Frizzell and Dante 1965
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 | |||||
Age range: base of the Selandian to the top of the Priabonian or 61.66000 to 33.90000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tertiary | USA (Mississippi) | Otolithus meyeri (163732) | |
| Selandian - Thanetian | Ukraine | P. convexus (159509) | |
| Eocene | USA (Texas) | P. petropolis (84145) | |
| Lutetian | USA (Texas) | P. petropolis, P. stintoni (84146) | |
| Lutetian | Germany (Lower Saxony,) | P. convexus (188954) | |
| Middle Eocene | USA (Texas) | P. petropolis, P. stintoni (84144 84147) | |
| Bartonian | USA (Texas) | P. petropolis (7437 7438 7439) | |
| Priabonian | USA (Louisiana) | P. meyeri (32925) |