Bab's Basin (Paleocene of the United States)

Also known as UALP 7654, 7659, 7669, 7671

Where: San Juan County, New Mexico (36.3° N, 108.2° W: paleocoordinates 42.9° N, 88.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Nacimiento Formation, Torrejonian (63.3 - 61.7 Ma)

• close to the midpoint of a reversed magnetic polarity zone in the Kutz Canyon section interpreted as C27r based on the position of the K-T boundary in the correlative Barrel Spring Arroyo = De-na-zin Wash section: see Butler et al. 1977, Lucas et al. 1997

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial

Primary reference: L. H. Taylor. 1981. The Kutz Canyon Local Fauna, Torrejonian (Middle Paleocene) of the San Juan Basin, New Mexico;. In S. G. Lucas, J. K. Rigby Jr., B. S. Kues (eds.), Advances in San Juan Basin Paleontology 242-263 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 14815: authorized by John Alroy, entered by John Alroy on 15.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• identical to list 4 of Williamson 1996
a.k.a. "1 mile" or "2 miles west of Angel Peak"
UALP provenances based Taylor 1981 where possible
Mammalia
 Cimolesta - Cimolestidae
Acmeodon secans Matthew and Granger 1921 eutherian
UALP 7671
 Leptictida - Leptictidae
Prodiacodon puercensis Matthew 1918 eutherian
 Condylarthra - Hyopsodontidae
"Protoselene opisthacus" = Mioclaenus opisthacus Cope 1882 condylarth
UALP 7671
Mioclaenus turgidus Cope 1881 condylarth
probably includes "M. sp." from UALP 7671
Promioclaenus acolytus Cope 1882 condylarth
UALP 7671
 Tribosphenida - Periptychidae
Periptychus carinidens Cope 1881 condylarth
UALP 7654, 7671
Haploconus angustus Cope 1881 condylarth
UALP 7671
Anisonchus sectorius Cope 1881 condylarth
 Tribosphenida - Phenacodontidae
Tetraclaenodon puercensis Cope 1881 condylarth
UALP 7654, 7671
 Ferae - Viverravidae
Protictis haydenianus Cope 1882 placental
 Macroscelidea - Apheliscidae
Litomylus dissentaneus Simpson 1935 elephant shrew
 Taeniodonta - Conoryctidae
Conoryctella pattersoni Schoch and Lucas 1981 taeniodont
 Taeniodonta - Stylinodontidae
Psittacotherium multifragum Cope 1882 taeniodont
UALP 7671
 Tribosphenida - Arctocyonidae
Deuterogonodon ? noletil Van Valen 1978 condylarth
Arctocyon ferox Cope 1883 condylarth
"Mimotricentes subtrigonus" = Tricentes subtrigonus Cope 1881 condylarth
UALP 7671
Chriacus pelvidens Cope 1881 condylarth
UALP 7671: i.d. of C. baldwini of Taylor 1981 omitted without explanation
 Acreodi - Triisodontidae
Triisodon sp. Cope 1881 eutherian
UALP 7671; not clear why this is omitted by Williamson and Lucas 1993
Goniacodon levisanus Cope 1883 eutherian
UALP 7671
 Acreodi - Oxyclaenidae
Pentacodon inversus Cope 1888 eutherian
probably includes "P. sp." from UALP 7671
 Hyaenodonta - Hyaenodontidae
Deltatherium fundaminis Cope 1881 eutherian
UALP 7671
 Sarcobora - Mixodectidae
Mixodectes malaris Cope 1884 insectivoran