Cochrane 2 (Paleocene of Canada)

Also known as Cochrane 11; Cochrane II

Where: Alberta, Canada (51.2° N, 114.4° W: paleocoordinates 57.7° N, 92.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Paskapoo Formation, Ti1 (61.7 - 56.8 Ma)

• reassigned from the Porcupine Hills Formation to the Paskapoo Formation by Fox (2011)

•fossils are from "within an interval ranging from a few centimeters to a meter or so in thickness" (Fox 2011)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; pebbly, shelly/skeletal, green siltstone

• "Paskapoo sediments were deposited in the channels and floodplains of small to moderate-sized rivers, and in ponds, lakes, and swamps" (Fox 2011)
• "poorly bedded grayish−green siltstones, rich in broken bivalve and gastropod shells that are accompanied by bits of coalified wood and occasional well−rounded pebbles" (Fox 2011)

Size classes: macrofossils, mesofossils

Collected by G. P. Youzwyshyn in 1988

Collection methods: bulk, chemical, sieve

• see Scott et al. 2002

•fossils were presumably collected over numerous field seasons

Primary reference: R. C. Fox. 1988. Late Cretaceous and Paleocene mammal localities of southern Alberta. Occasional Paper of the Tyrrell Museum of Palaeontology 6:1-38 [J. Alroy/J. Alroy/P. Mannion]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 14939: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by K. Christopher Beard, Patricia Holroyd and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

• same as the list given by Fox 1990a
 Therapsida - Chronoperatidae
Chronoperates paradoxus n. gen. n. sp.4
Chronoperates paradoxus n. gen. n. sp.4 Fox et al. 1992 cynodont
 Pantodonta -
 Cimolesta - Cimolestidae
Paleotomus senior Simpson 1937 eutherian
Paleotomus junior9 Scott et al. 2002 eutherian
said to be new
 Cimolesta - Pentacodontidae
Pentacodontidae indet. Simpson 1937 eutherian
said to be new
Bisonalveus browni Gazin 1956 eutherian
 Cimolesta - Apatemyidae
Jepsenella cf. praepropera Simpson 1940 eutherian
 Placentalia -
Condylarthra indet.1 Cope 1881 placental
 Condylarthra -
Desmatoclaenus sp. Gazin 1941 placental
 Glires - Mimotonidae
cf. Mimotonidae indet. Li 1977 placental
 Primates - Paromomyidae
Ignacius glenbowensis11 Scott et al. 2023 primate
Paromomys depressidens6 Gidley 1923 primate
presumably includes "? Palaechthon sp."
 Primates - Plesiadapidae
Plesiadapis praecursor Gingerich 1975 primate
not clear if this is really present in light of Fox 1990b
Plesiadapis cf. anceps Simpson 1936 primate
? Pronothodectes sp. Gidley 1923 primate
regarded as N. intermedius by Gingerich 1982a, but described by Fox 1990b
Nannodectes intermedius Gazin 1971 primate
 Primates - Picrodontidae
Picrodus canpacius n. sp.8 Scott and Fox 2005 primate
 Primates - Carpolestidae
Elphidotarsius russelli n. sp. Krause 1978 primate
Carpodaptes cf. hazelae Simpson 1936 primate
 Primates - Palaechthonidae
Phoxomylus puncticuspis n. gen. n. sp.2 Fox 2011 primate
Torrejonia cf. sirokyi1 Szalay 1973 primate
 Tribosphenida - Plagiomenidae
cf. Thylacaelurus sp. Russell 1954 placental
 Dermoptera -
Elpidophorus cf. elegans Simpson 1927 colugo
 Tribosphenida - Mixodectidae
Eudaemonema cf. cuspidata Simpson 1935 placental
 Tribosphenida - Pantolestoidae
Bessoecetor septentrionalis9 Russell 1929 placental
 Tribosphenida -
"Prodiacodon cf. puercensis" = Diacodon puercensis
"Prodiacodon cf. puercensis" = Diacodon puercensis Matthew 1918 placental
 Soricomorpha - Nyctitheriidae
Nyctitheriidae indet. Simpson 1928 placental
cf. Nyctitherium sp. Marsh 1872 placental
said to be new
Limaconyssus sp. Gingerich 1987 placental
Leptacodon cf. tener Matthew and Granger 1921 placental
Leptacodon cf. packi Jepsen 1930 placental
"Leptacodon" munusculum Simpson 1935 placental
 Acreodi - Mesonychidae
Mesonychidae indet. Cope 1875 condylarth
 Acreodi - Oxyclaenidae
"? Oxyclaeninae indet." = Oxyclaenidae
"? Oxyclaeninae indet." = Oxyclaenidae Scott 1892 placental
said to be new
 Procreodi - Arctocyonidae
Thryptacodon orthogonius9 Russell 1929 condylarth
Colpoclaenus cf. keeferi Patterson and McGrew 1962 condylarth
"Arctocyon cf. montanensis" = Arctocyon corrugatus1 Cope 1883 condylarth
? Oxyprimus sp. Van Valen 1978 condylarth
? Mimotricentes sp. Simpson 1937 condylarth
Chriacus pelvidens Cope 1881 condylarth
Chriacus cf. baldwini Cope 1882 condylarth
 Tribosphenida - Phenacodontidae
Ectocion collinus Russell 1929 condylarth
 Carnivora -
Pristinictis connata n. sp.3 Fox and Youzwyshyn 1994 carnivoran
presumably includes new viverravid of Fox
 Ferae - Viverravidae
Simpsonictis cf. tenuis Simpson 1935 placental
Simpsonictis pegus Gingerich and Winkler 1985 placental
 Placentalia -
Creodonta indet. Cope 1875 creodont
 Tribosphenida - Periptychidae
? Periptychidae indet. Cope 1882 condylarth
 Macroscelidea - Apheliscidae
Gingerichia hystrix n. sp.12 Zack et al. 2005 elephant shrew
said to be new
Litomylus dissentaneus Simpson 1935 elephant shrew
Litomylus grandaletes n. sp.9 Scott et al. 2002 elephant shrew
said to be new
 Macroscelidea -
Litocherus sp. Gingerich 1983 elephant shrew
Litocherus cf. lacunatus Gazin 1956 elephant shrew
 Leptictida - Leptictidae
Myrmecoboides montanensis Gidley 1915 eutherian
Prodiacodon furor Novacek 1977 eutherian
Prodiacodon concordiarcensis Simpson 1935 eutherian
 Proteutheria - Palaeoryctidae
Palaeoryctidae indet. Winge 1917 eutherian
three forms
Palaeoryctes cf. punctatus Van Valen 1966 eutherian
Pararyctes pattersoni Van Valen 1966 eutherian
Pararyctes rutherfordi n. sp.9 Scott et al. 2002 eutherian
said to be new
Didelphodontinae indet. Simpson 1927 eutherian
 Proteutheria -
Palaeoryctoidea indet. Winge 1917 eutherian
said to be new
 Tribosphenida - Peradectidae
Peradectes sp. Matthew and Granger 1921 marsupial
 Multituberculata - Microcosmodontidae
Pentacosmodon sp. Jepsen 1940 multituberculate
Acheronodon sp. Archibald 1982 multituberculate
said to be new
 Multituberculata - Neoplagiaulacidae
Neoplagiaulacidae indet. Ameghino 1890 multituberculate
Parectypodus sp. Jepsen 1930 multituberculate
said to be new
Parectypodus sinclairi Simpson 1935 multituberculate
Parectypodus cf. sylviae Rigby 1980 multituberculate
Mimetodon silberlingi Simpson 1935 multituberculate
Ectypodus sp. Matthew and Granger 1921 multituberculate
Ectypodus cf. szalayi Sloan 1981 multituberculate
Mesodma pygmaea Sloan 1987 multituberculate
Neoplagiaulax nelsoni Sloan 1987 multituberculate
Neoplagiaulax cf. hunteri Simpson 1936 multituberculate
Neoplagiaulax donaldorum10 Scott and Krause 2006 multituberculate
 Multituberculata - Ptilodontidae
Baiotomeus russelli n. sp.9 Scott et al. 2002 multituberculate
said to be new
Prochetodon speirsae n. sp.7 Scott 2004 multituberculate
Ptilodus sp. Cope 1881 multituberculate
two forms "T" and "C," both said to be new
Ptilodus gnomus n. sp.9 Scott et al. 2002 multituberculate
 Multituberculata - Cimolodontidae
Anconodon sp. Jepsen 1940 multituberculate
Anconodon gidleyi Simpson 1935 multituberculate
Anconodon cochranensis Russell 1929 multituberculate
 Multituberculata - Eucosmodontidae
Eucosmodontinae indet. Jepsen 1940 multituberculate
 Temnospondyli - Albanerpetontidae
Albanerpeton "sp. nov."5 Estes and Hoffstetter 1976 tetrapod