ammonites

Small's Quarry, Garden Park: Kimmeridgian - Tithonian, Colorado
collected by B. Small 1992

Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
Country:United States State/province:Colorado County:Fremont
Coordinates: 38.5° North, 105.2° West (view map)
Paleocoordinates:34.0° North, 52.2° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Jurassic Epoch:Late/Upper Jurassic
Key time interval:Kimmeridgian - Tithonian
Age range of interval:155.7 - 145.5 m.y. ago
Stratigraphy
Formation:Morrison Member:Brushy Basin
Stratigraphic resolution:bed
Stratigraphy comments: upper middle part of formation, also described as "low in the Brushy Basin Member"
Lithology and environment
Primary lithology:lenticular,gray carbonaceous mudstone
Includes fossils?Y
Lithology description: "a lenticular gray lacustrine mudstone...The mudstone is carbon rich, some of which is in the form of fusain or charcoal."
Environment:pond
Geology comments: "a small pond"; "an overbank pond that experienced occasional input of channel splays"
Taphonomy
Modes of preservation:body
Degree of concentration:concentrated
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:excellent
Abundance in sediment:abundant
Articulated whole bodies:some
Associated major elements:some
Disassociated major elements:some
Disassociated minor elements:some
Temporal resolution:time-averaged
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:field collection,selective quarrying,mechanical
Reason for describing collection:taxonomic analysis
Museum repositories:DMNH
Collectors:B. Small Collection dates:1992
Metadata
Also known as:DMNH Quarry 6, CO-11
Database number:48161
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:ETE,vertebrate
Created:2005-03-15 10:11:01 Last modified:2009-09-02 21:29:05
Access level:the public Released:2005-03-15 10:11:01
Reference information
Primary reference:
14309ETE J. D. Harris and K. Carpenter. 1996. A large pterodactyloid from the Morrison Formation (Late Jurassic) of Garden Park, Colorado. Neues Jahrbuch für Geologie und Paläontologie Monatshefte 1996(8):473-484 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

12892ETE K. Carpenter. 1998. Armor of Stegosaurus stenops, and the taphonomic history of a new specimen from Garden Park, Colorado. Modern Geology 23:127-144 [M. Carrano/M. Carrano/M. Carrano]
12893ETE K. Carpenter. 1998. Vertebrate biostratigraphy of the Morrison Formation near Cañon City, Colorado. Modern Geology 23:407-426 [M. Carrano/M. Carrano/M. Carrano]
30810ETE M. T. Carrano and S. D. Sampson. 2008. The phylogeny of Ceratosauria (Dinosauria: Theropoda). Journal of Systematic Palaeontology 6(2):183-236 [M. Carrano/M. Carrano]
19094ETE D. J. Chure. 2001. The second record of the African theropod Elaphrosaurus (Dinosauria, Ceratosauria) from the Western Hemisphere. Neues Jahrbuch für Geologie und Paläontologie Monatshefte 2001(9):565-576 [M. Carrano/M. Carrano]
15179ETE J. R. Foster. 2003. Paleoecological analysis of the vertebrate fauna of the Morrison Formation (Upper Jurassic), Rocky Mountain region, U.S.A. New Mexico Museum of Natural History and Science Bulletin 23:1-95 [M. Carrano/M. Carrano]
17532ETE L. A. McWhinney, B. M. Rothschlid, and K. Carpenter. 2001. Posttraumatic chronic osteomyelitis in Stegosaurus dermal spikes. In K. Carpenter (ed.), The Armored Dinosaurs. Indiana University Press, Bloomington 141-156 [M. Carrano/M. Carrano]
15180ETE P. E. Monaco. 1998. A short history of dinosaur collecting in the Garden Park Fossil Area, Cañon City, Colorado. Modern Geology 23(1-4):465-480 [M. Carrano/M. Carrano]
14856ETE B. J. Small and K. Carpenter. 1997. Upper Jurassic microvertebrates from the "Small Quarry", Garden Park, Colorado. Journal of Vertebrate Paleontology 17(3, suppl.):76A-77A [M. Carrano/M. Carrano]
13281ETE C. E. Turner and F. Peterson. 1999. Biostratigraphy of dinosaurs in the Upper Jurassic Morrison Formation of the Western Interior, U.S.A. In D. D. Gillette (ed.), Vertebrate Paleontology in Utah, Utah Geological Survey Miscellaneous Publication 99-1:77-114 [M. Carrano/M. Carrano/M. Carrano]