Rancho La Amapola (Pleistocene of Mexico)

Also known as El Cedral

Where: San Luis Potosi, Mexico (23.8° N, 100.7° W: paleocoordinates 23.8° N, 100.7° W)

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• Radioisotopic_date error method comments

•0.01077 0.00022 C14

•0.01557 0.00048 C14

•0.017587 0.000157 C14

•0.02438 0.00096 C14

•0.03184 0.0016 C14

Environment/lithology: lacustrine

• edge of a "spring or ephemeral lake"; Pleistocene fossils apparently from units VI (youngest) through XII (oldest); one more, imprecise date from unfossiliferous unit VII omitted; dates in text and more detailed figure do not agree, so the latter are used instead; additional, concordant dates are given by Mirambell 1994

Collection methods: quarrying, surface (float)

Primary reference: J. L. Lorenzo and L. Mirambell. 1986. Preliminary report on archaeological and paleoenvironmental studies in the area of El Cedral, San Luis Potosi, Mexico 1977- 1980. 107-113 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: archaeological analysis

PaleoDB collection 71277: authorized by John Alroy, entered by John Alroy on 09.02.1999, edited by Evangelos Vlachos and Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

• omits Recent mammals
Mammalia
 Carnivora - Ursidae
Arctodus sp. Leidy 1854 bear
 Carnivora - Canidae
"Canis dirus" = Aenocyon dirus
"Canis dirus" = Aenocyon dirus Leidy 1858 dire wolf
 Carnivora - Felidae
"Felis atrox" = Panthera leo atrox
"Felis atrox" = Panthera leo atrox Leidy 1853 lion
 Artiodactyla - Camelidae
Camelops sp. Leidy 1854 camel
 Perissodactyla - Equidae
Equus cedralensis n. sp.1 Alberdi et al. 2014 horse
Holotype. A mandible ramus fragment formed by two specimens: one p2-m3 right row (DP-2675 I-2 15), and a second fragment of the symphysis with the anterior dentition (DP-2674 I-2 8), articulated together and stored at the Paleontological Collection (DP-INAH) of the Laboratorio de Arqueozoología “M. en C. Ticul Álvarez Solórzano” Subdirección de Laboratorios y Apoyo Académico, INAH in Mexico City (Figure 9). Paratype series. Fragments of mandible ramii with remains of several teeth, p3-m3 right and left (DP-4577) and several upper row: P2-M2 left (P2 DP-3841, P3-P4 DP-3842, and M1-M2 DP- 3839), and three P2-M1 (DP-3829 left, and DP-3830 and DP-4587 right).
Equus conversidens1 Owen 1869 horse
Equus mexicanus1 Hibbard 1955 horse
"two species"
 Megatherioidea - Megatheriidae
Eremotherium laurillardi2 Lund 1842 edentate
Polaco-Ramos, 1981; McDonald, 2002
  - Mylodontidae
Mylodontidae indet. Ameghino 1889 edentate
"mylodont"
 Cingulata - Glyptodontidae
Glyptodontidae indet. Burmeister 1879 glyptodon
"glyptodont"
 Proboscidea - Mammutidae
Mammutidae indet. Hay 1922 mastodon
"mastodont"
 Proboscidea - Elephantidae
Mammuthus sp. Brookes 1828 mammoth
"mammoth"