CO-49, Dino Cove: Late/Upper Kimmeridgian - Tithonian, Colorado
collected by A. Fiorillo, K. Trujillo, C. May 1995–1998
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Branchiopoda
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Conchostraca indet.
Sars 1867
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invalid subgroup of Diplostraca | ||||||||||
"common" | ||||||||||
unclassified
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Mammaliaformes indet.
Rowe 1988
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Koch et al. 2006 | |||||||||
Isolated teeth | ||||||||||
Reptilia
- Crocodyliformes
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Crocodyliformes indet.
(Hay 1930)
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Koch et al. 2006 | 1 specimen | ||||||||
Long bone | ||||||||||
Reptilia
- Stegosauridae
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Stegosaurus sp.
Marsh 1877
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Koch et al. 2006 | 2 specimens | ||||||||
MWC 5525, one anterior caudal centrum and one mid-caudal centrum | ||||||||||
Reptilia
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Allosaurus sp.
Marsh 1877
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1 specimen | |||||||||
tooth | ||||||||||
cf. Apatosaurus sp.
Marsh 1877
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1 individual | |||||||||
MWC 5140, partial skeleton consisting of two nearly complete cervical vertebrae, parts of at least three other cervical vertebrae, four dorsal vertebrae, four sacral vertebrae, four caudal vertebrae, several chevrons, left femur, a partial ilium, a partial ischium, several partial ribs, and many fragments | ||||||||||
= Apatosaurus sp.
Marsh 1877
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Foster 2003 | |||||||||
see common names |
Geography
Country: | United States | State/province: | Colorado | County: | Gunnison |
Coordinates: | 38.5° North, 107.4° West (view map) | ||||
Paleocoordinates: | 34.4° North, 54.5° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
Geographic resolution: | small collection |
Time
Period: | Jurassic | Epoch: | Late/Upper Jurassic |
Key time interval: | Late/Upper Kimmeridgian - Tithonian | ||
Age range of interval: | 155.70000 - 145.00000 m.y. ago | ||
Age estimate: | maximum 151 ± 0.5 Ma (U/Pb) |
Stratigraphy
Formation: | Morrison | Member: | Brushy Basin |
Stratigraphic resolution: | bed |
Lithology and environment
Primary lithology: | lenticular,"cross stratification",planar lamination,fine,medium sandstone |
Secondary lithology: | green mudstone |
Includes fossils? | Y |
Lithology description: "lens-shaped, fine- to medium-grained sandstone...In the thickest part of the sandstone body the sedimentary structures show a transition from crossbeds with heights of 10-12cm at the bottom of the unit, to well-defined planar beds, to cross-beds with heights of 2-3cm, to poorly-defined beds at the top of the unit...Above and below the sandstone are green, smectite-rich, massive mudstones." | |
Environment: | crevasse splay |
Geology comments: "a flood event with rapidly decreasing flow velocity" in "a playa-like complex" of lakes. Possible crevasse splay. |
Taphonomy
Modes of preservation: | body |
Degree of concentration: | dispersed |
Size of fossils: | macrofossils,mesofossils |
Spatial orientation: | random |
Preservation of anatomical detail: | good |
Articulated whole bodies: | some |
Disassociated major elements: | some |
Fragmentation: | occasional |
Encrustation: | none |
Temporal resolution: | snapshot |
Spatial resolution: | parautochthonous |
Collection methods and comments
Collection methods: | selective quarrying,mechanical,field collection | ||
Reason for describing collection: | taxonomic analysis | ||
Collectors: | A. Fiorillo, K. Trujillo, C. May | Collection dates: | 1995–1998 |
Metadata
Also known as: | Curecanti N.R.A., Blue Mesa Apatosaurus Quarry | ||
Database number: | 38883 | ||
Authorizer: | M. Carrano, P. Mannion | Enterer: | M. Carrano, J. Tennant |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2004-05-12 15:59:24 | Last modified: | 2023-09-08 13:58:37 |
Access level: | the public | Released: | 2004-05-12 15:59:24 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
10502. | A. R. Fiorillo and C. L. May. 1996. Preliminary report on the taphonomy and depositional setting of a new dinosaur locality in the Morrison Formation (Brushy Basin Member) of Curecanti National Recreation Area, Colorado. In M. Morales (ed.), The Continental Jurassic. Museum of Northern Arizona Bulletin 60:555-561 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
15179 | ETE | 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] |
69484 | J. R. Foster and J. E. Peterson. 2016. First report of Apatosaurus (Diplodocidae: Apatosaurinae) from the Cleveland-Lloyd Quarry in the Upper Jurassic Morrison Formation of Utah: abundance, distribution, paleoecology, and taphonomy of an endemic North American sauropod clade. Palaeoworld 25:431-443 [M. Carrano/M. Carrano] | |
50456 | A. L. Koch, F. Frost, and K. Trujillo. 2006. Palaeontological discoveries at Curecanti National Recreation Area and Black Canyon of the Gunnison National Park, Upper Jurassic Morrison Formation, Colorado. In J. R. Foster & S. G. Lucas (ed.), Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:35-38 [P. Mannion/J. Tennant/M. Carrano] | |
13281 | ETE | 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] |
81455 | J. S. Tweet, V. L. Santucci, T. Connors and J. P. Kenworthy. 2012. Paleontological Resource Inventory and Monitoring: Northern Colorado Plateau Network. National Park Service Technical Report NPS/NCPN/NRTR—2012/585 xii-524 [M. Carrano/M. Carrano] | |
84543 | J. S. Tweet and V. L. Santucci. 2018. An inventory of non-avian dinosaurs from National Park Service areas. In S. G. Lucas & R. M. Sullivan (ed.), Fossil Record 6. New Mexico Museum of Natural History and Science Bulletin 79:703-730 [M. Carrano/M. Carrano] |