Fossil Forest Quarry 1 (Cretaceous of the United States)

Also known as Kirtland Shale; NMMNH L-3539

Where: San Juan County, New Mexico (36.3° N, 108.2° W: paleocoordinates 43.7° N, 85.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Edmontonian (70.6 - 66.0 Ma)

Environment/lithology: terrestrial; lithology not reported

Primary reference: J. K. Rigby, Jr. and D. L. Wolberg. 1987. The therian mammalian fauna (Campanian) of Quarry 1, Fossil Forest study area, San Juan Basin, New Mexico. Geological Society of America Special Paper 209:51-79 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14496: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• this is at virtually the same stratigraphic level as Hunter Wash; both sites can be tied to an average date of 73.5 +/- 2.2 Ma (K-Ar on biotite and sanidine) for three coals less than 50 m above this horizon
considered Edmontonian by Lillegraven and Ostresh 1990 but Judithian by Rowe et al. 1992
list omits multituberculates
Mammalia
 Polydolopimorphia -
Ectocentrocristus foxi Rigby and Wolberg 1987 metatherian
 Tribosphenida - Marsupialia
 Tribosphenida - Alphadontidae
Alphadontidae indet.1 Marshall et al. 1990 metatherian
Alphadon cf. marshi1 Simpson 1927 metatherian
Alphadon halleyi Sahni 1972 metatherian
 Tribosphenida - Aquiladelphidae
"Aquiladelphis paraminor n. sp." = Aquiladelphis minor
"Aquiladelphis paraminor n. sp." = Aquiladelphis minor Fox 1971 metatherian
 Tribosphenida - Pediomyidae
"Pediomys fassetti n. sp." = Leptalestes prokrejcii
"Pediomys fassetti n. sp." = Leptalestes prokrejcii Fox 1979 metatherian
 Tribosphenida - Stagodontidae
cf. Eodelphis sp. Matthew 1916 metatherian
 Tribosphenida -
Eutheria indet. eutherian
Paranyctoides cf. sternbergi Fox 1979 eutherian
 Leptictida - Gypsonictopidae
Gypsonictops clemensi n. sp. Rigby and Wolberg 1987 eutherian
Gypsonictops cf. lewisi Sahni 1972 eutherian