Also known as Griffith Farm
Where: Alberta, Canada (51.8° N, 113.0° W: paleocoordinates 59.5° N, 84.6° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Scollard Formation, Lancian (70.6 - 66.0 Ma)
• layer "from less than 1 foot in thickness to about 3 feet"
•all of the localities are within 27 m above the Kneehills Tuff, dated at "65-66" Ma according to Clemens et al. 1979 - this site is actually 43 ft above the tuff
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; lithified claystone and siltstone
Size class: mesofossils
Collected by W. A. Clemens in 1963-1967
Collection methods: bulk, surface (float), surface (in situ), sieve,
• because this quarry yielded a large majority of specimens, specimen counts assume that an absolute minimum number of listed specimens come from the other localities
•NISP 818 (maximum)
•Schowalteria specimen was found "in situ" but some parts of it were "recovered by carefully searching the outcrop and screen-washing the talus"
Primary reference: J. A. Lillegraven. 1969. Latest Cretaceous mammals of upper part of Edmonton Formation of Alberta, Canada, and review of marsupial-placental dichotomy in mammalian evolution. University of Kansas Paleontological Contributions 50:1-122 [J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 14630: authorized by John Alroy, entered by John Alroy on 26.07.1994, edited by Matthew Carrano and Roger Benson
Creative Commons license: CC BY (attribution)
Taxonomic list
•Fox 1988 lists "Deltatheriidae indet." and Fox 1974 "cf. Deltatheroides sp." from Trochu, exact locality is not given
Amphibia | |
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Mammalia | |
Cimolomys trochuus n. sp., Cimolomys gracilis
Cimolomys trochuus n. sp. Lillegraven 1969 multituberculate
Cimolomys gracilis Marsh 1889 multituberculate | |
Cimolodon nitidus Marsh 1889 multituberculate | |
Mesodma hensleighi n. sp. Lillegraven 1969 multituberculate
Mesodma thompsoni Clemens 1964 multituberculate
Mesodma formosa Marsh 1889 multituberculate | |
"Cimexomys priscus n. sp." = Paracimexomys priscus
"Cimexomys priscus n. sp." = Paracimexomys priscus Lillegraven 1969 multituberculate | |
Schowalteria clemensi n. gen. n. sp.3
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Gypsonictops hypoconus Simpson 1927 eutherian
Gypsonictops illuminatus n. sp. Lillegraven 1969 eutherian | |
"Cimolestes magnus n. sp." = Altacreodus magnus
"Cimolestes magnus n. sp." = Altacreodus magnus Clemens and Russell 1965 creodont UALVP 622 - type (incomplete left dentary containing p4, m1–3)
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"Cimolestes cerberoides n. sp." = Ambilestes cerberoides, Batodon tenuis, "Cimolestes propalaeoryctes n. sp." = Scollardius propalaeoryctes
"Cimolestes cerberoides n. sp." = Ambilestes cerberoides Lillegraven 1969 eutherian UALVP 2973 - type (incomplete left maxilla containing P3–4, M1–2)
Batodon tenuis Marsh 1892 eutherian
"Cimolestes propalaeoryctes n. sp." = Scollardius propalaeoryctes Lillegraven 1969 eutherian | |
"Alphadon jasoni" = Nortedelphys jasoni2 Storer 1991 marsupial new specimen; includes many of the A. marshi specimens according to Johanson 1996b
Nortedelphys magnus n. gen. n. sp.1 Case et al. 2004 marsupial type was originally referred to Alphadon marshi
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Pediomys elegans, "Pediomys krejcii" = Leptalestes krejcii, "Pediomys hatcheri" = Protolambda hatcheri
Pediomys elegans Marsh 1889 metatherian
"Pediomys krejcii" = Leptalestes krejcii Clemens 1966 metatherian
"Pediomys hatcheri" = Protolambda hatcheri Osborn 1898 metatherian | |
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Alphadon wilsoni n. sp. Lillegraven 1969 metatherian
"Alphadon rhaister" = Turgidodon rhaister Clemens 1966 metatherian | |
Reptilia | |
Paraderma bogerti5 Estes 1964 squamates UALVP 29845 and several unnumbered (dentaries), 33385 (parietal), 33902-33910 (cervical/dorsal vertebrae)
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