Suchilquitongo: Early/Lower Hemingfordian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
- Perissodactyla
- Equidae
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Merychippus sp.
Leidy 1856
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= Equinae indet.
Steinmann and Döderlein 1890
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Alroy 2002 | |||||||||
Mammalia
- Perissodactyla
- Rhinocerotidae
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Rhinocerotidae indet.
Gray 1821
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Mammalia
- Merycoidodontidae
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Merychyus aff. minimus
Peterson 1907
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see also Kelly and Lander 1988 | ||||||||||
Mammalia
- Protoceratidae
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Synthetoceras sp.
Stirton 1932
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Jimenez-Hidalgo 1998 | |||||||||
new material | ||||||||||
cf. Paratoceras sp.
Frick 1937
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see common names |
Geography
Country: | Mexico | State/province: | Oaxaca |
Coordinates: | 17.1° North, 96.7° West (view map) | ||
Paleocoordinates: | 17.7° North, 93.4° West | ||
Basis of coordinate: | based on nearby landmark |
Time
Period: | Neogene | Epoch: | Miocene |
Stage: | Burdigalian | 10 m.y. bin: | Cenozoic 5 |
*Period: | Tertiary | ||
Key time interval: | Early/Lower Hemingfordian | ||
Age range of interval: | 20.43000 - 15.97000 m.y. ago | ||
Age estimate: | maximum 19.3 ± 0.3 Ma (K-Ar) | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Suchilquitongo | ||||
Stratigraphy comments: Early Hemingfordian after Ferrusquía-Villafranca 2003 |
Lithology and environment
Primary lithology: | not reported |
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Reason for describing collection: | general faunal/floral analysis |
Taxonomic list comments:dates of "16.5 +/- 0.3 to 17.4 +/- 0.3 Ma" do not apply to the fossiliferous unit; "correct" dates are "19.3 Ma (from feldspars) and 20.6 Ma (from biotite)"; 16.5 date is apparently the same as 16.3 +/- 0.3 Ma for upper part of the formation given by Ferrusquia 1984 apparently the same as the Valle de Oaxaca fauna of Ferrusquia 1978 and Ferrusquia 1984, which came from four "closely spaced" localities my best guess is that these localities are near the main road around Oaxaca de Juarez gomphothere Ferrusquia 1984 omitted, perhaps a misidentification archaeolagine of Ferrusquia 1984 omitted |
Metadata
Database number: | 18744 | ||
Authorizer: | J. Alroy | Enterer: | J. Alroy |
Modifier: | J. Marcot | Research group: | vertebrate |
Created: | 1993-02-18 00:00:00 | Last modified: | 2023-10-12 14:01:26 |
Access level: | the public | Released: | 1993-02-18 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
1483. | I. Ferrusquia-Villafranca. 1990. Biostratigraphy of the Mexican Continental Miocene: Part I, Introduction and the Northwestern and Central Faunas. Part II, The Southeastern (Oaxacan) Faunas. Part III, The Southeasternmost (Chiapasan) Fauna and Concluding Remarks On the Discussed Vertebrate Record. Paleontologia Mexicana 56:1-149 [J. Alroy/J. Alroy/J. Marcot] |
Secondary references:
6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
2031 | E. Jimenez-Hidalgo. 1998. First record of Synthetoceras (Tylopoda, Protoceratidae) from Oaxaca, southeastern Mexico. Journal of Vertebrate Paleontology 18(3):54A [J. Alroy/J. Alroy/J. Ju] |