Also known as UCM loc. 77267; UCM locality 77267
Where: Arapahoe County, Colorado (39.7° N, 104.7° W: paleocoordinates 45.9° N, 82.5° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Denver Formation, Puercan (66.0 - 63.3 Ma)
• "about 145 m above" the base of the formation.
• group of beds-level stratigraphic resolution
Environment/lithology: terrestrial; brown, red, yellow, argillaceous, silty shale and tuffaceous sandstone
Size classes: macrofossils, mesofossils
Collection methods: bulk, surface (float), sieve,
• "mostly surface collected, however, some screenwashing". Middleton and Dewar (2004) report fossil wood.
Primary reference: M. D. Middleton. 1983. Early Paleocene vertebrates of the Denver Basin, Colorado. 1-404 [J. Alroy/J. Alroy/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 14658: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Patricia Holroyd and Terri Cleary
Creative Commons license: CC BY (attribution)
Taxonomic list
•"Auraria urbana" (unpublished genus and species names)
•eight unpublished species listed by Middleton 1983 were finally published by Middleton and Dewar 2004 (see below)
unclassified | |
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Reptilia | |
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Squamata indet.6 squamates UCM 34618, medial part of right dentary with basal tooth remnants; 34959, medial fragment of left dentary with an incomplete tooth; 34992, medial part of right dentary lacking teeth; 35005, vertebra; 37608, dentary fragment with two complete teeth; 38862, distal end and shaft of humerus; 38875, ?dentary fragments; 39542, fragment of right dentary with splenial and three complete teeth; 43746, two articulated vertebra; 47293, axis? vertebra; 47300, osteoderms and two dentary fragments; and unnumbered, posterior part of right dentary.
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cf. Odaxosaurus piger6 Gilmore 1928 squamates UCM 34991, posterior part of left maxilla with four teeth
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Palaeoscincosaurus middletoni n. gen. n. sp.6 Sullivan and Lucas 1996 squamates UCM 34621 (holotype), medial part of left mandible with two teeth; UCM nos. 34623, posterior part of left maxilla with six teeth; 34624, medial part of right mandible with three teeth; 34994, articulated anterior portions of right maxilla and mandible; 35064, medial and posterior part of right mandible with five teeth; 35065, posterior part of right maxilla with four teeth; and 39543, medial part of left mandible with two teeth.
cf. Palaeoscincosaurus middletoni6 Sullivan and Lucas 1996 squamates UCM 48762, posterior part of left maxilla with seven teeth
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Mammalia | |
Proteutheria indet. Romer 1966 eutherian | |
Procerberus grandis n. sp., Procerberus andesiticus n. sp.
Procerberus grandis n. sp. Middleton and Dewar 2004 eutherian
Procerberus andesiticus n. sp. Middleton and Dewar 2004 eutherian | |
Alticonus gazini n. gen. n. sp.3, Ampliconus browni n. gen. n. sp., Conacodon matthewi n. sp., "Oxyacodon archibaldi n. sp." = Miniconus archibaldi, Auraria urbana n. gen. n. sp.5
Ampliconus browni n. gen. n. sp. Eberle and Lillegraven 1998 condylarth originally an unpublished name
Conacodon matthewi n. sp. Middleton and Dewar 2004 condylarth
"Oxyacodon archibaldi n. sp." = Miniconus archibaldi Middleton and Dewar 2004 condylarth | |
Arctocyonidae indet., Oxyclaenus subbituminus n. sp., Baioconodon sp.1, Baioconodon denverensis, Oxyprimus cf. galadrielae
Arctocyonidae indet. Murray 1866 condylarth
Oxyclaenus subbituminus n. sp. Middleton and Dewar 2004 condylarth
Baioconodon denverensis Gazin 1941 condylarth
Oxyprimus cf. galadrielae Van Valen 1978 condylarth | |
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Cimexomys arapahoensis n. sp. Middleton and Dewar 2004 multituberculate
Cimexomys minor Sloan and Van Valen 1965 multituberculate | |
Mesodma cf. ambigua Jepsen 1940 multituberculate
Xyronomys robinsoni n. sp. Middleton and Dewar 2004 multituberculate | |
Kimbetohia mziae n. sp.
Kimbetohia mziae n. sp. Middleton and Dewar 2004 multituberculate | |
Catopsalis alexanderi n. sp.
Catopsalis alexanderi n. sp. Middleton 1982 multituberculate | |
Amphibia | |
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Actinopteri | |
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