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Metaxytherium crataegense
Taxonomy
Hesperosiren crataegensis was named by Simpson (1932). Its type specimen is AMNH 26838, a partial skeleton, and it is a 3D body fossil. Its type locality is Florindin Company Mine, which is in a Hemingfordian/Barstovian marine horizon in the Torreya Formation of Florida.
It was corrected as Hesperosiren crataegense by Simpson (1932); it was recombined as Metaxytherium crataegense by Aranda-Manteca et al. (1994), Domning (1996), Domning (2008), Hastings and Dooley (2017) and Domning (2018).
It was corrected as Hesperosiren crataegense by Simpson (1932); it was recombined as Metaxytherium crataegense by Aranda-Manteca et al. (1994), Domning (1996), Domning (2008), Hastings and Dooley (2017) and Domning (2018).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1932 | Hesperosiren crataegensis Simpson p. 192 figs. Fig. 1-10 |
| 1932 | Hesperosiren crataegense Simpson p. 426 |
| 1932 | Hesperosiren crataegensis Simpson p. 427 figs. Fig. 1-10 |
| 1952 | Hesperosiren crataegensis Sherman p. 98 |
| 1966 | Metaxytherium calvertense Kellogg p. 71 figs. Figs. 32-37 |
| 1974 | Metaxytherium calvertense Fondi and Pacini p. 45 |
| 1976 | Metaxytherium calvertense Reinhart p. 220 |
| 1985 | Metaxytherium calvertense de Muizon and Domning |
| 1994 | Metaxytherium crataegense Aranda-Manteca et al. p. 192 |
| 1994 | Metaxytherium calvertense Domning p. 189 |
| 1996 | Metaxytherium crataegense Domning p. 386 |
| 2008 | Metaxytherium crataegense Domning |
| 2017 | Metaxytherium crataegense Hastings and Dooley p. 83 |
| 2018 | Metaxytherium crataegense Domning p. 246 |
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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.
†Metaxytherium crataegense Simpson 1932
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Invalid names: Metaxytherium calvertense Kellogg 1966 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class, subp = subphylum | |||||
| References: Domning 1979, Carroll 1988, Nowak 1991, Hendy et al. 2009 | |||||
Age range: base of the Chattian to the top of the Early/Lower Barstovian or 28.10000 to 12.50000 Ma
Collections (16 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chattian | USA (Florida) | Metaxytherium crataegense (13076) | |
| Early/Lower Miocene - Middle Miocene | Peru (Piura) | Metaxytherium calvertense (13404) | |
| Burdigalian | USA (Maryland) | Trichechus giganteus (45511) | |
| Late/Upper Hemingfordian - Early/Lower Barstovian | USA (Florida) | Hesperosiren crataegensis (type locality: 58460) | |
| Early/Lower Barstovian | USA (Florida) | Hesperosiren crataegensis (18524 18538 18549) | |
| Langhian | USA (Virginia) | Metaxytherium calvertense (66065) Metaxytherium crataegense (79793) | |
| Langhian | USA (Maryland) | Metaxytherium calvertense (45498 45506 48884 70819 70826) Sirenia indet. (18516) | |
| Serravallian | USA (Virginia) | Metaxytherium crataegense (187324) |