FPA General Site (LACM): Early Tithonian, Colorado
collected by G. L. Callison & party 1970 1980
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Stegosauridae
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Stegosaurus sp.
Marsh 1877
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Foster 2003 | 1 individual | ||||||||
Reptilia
- Heterodontosauridae
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Fabrosauridae indet.
Galton 1972
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Weishampel and Weishampel 1983 | 4 individuals | ||||||||
= Echinodon sp.
Owen 1861
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Galton 2002 | |||||||||
= cf. Echinodon sp.
Owen 1861
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Foster 2003 | |||||||||
= Heterodontosauridae indet.
Romer 1966
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Galton 2007 | |||||||||
= Fruitadens haagarorum n. gen., n. sp.
Butler et al. 2010
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Butler et al. 2010 | |||||||||
LACM 115747 (holotype), maxillae, partial R dentary & anterior L dentary, disarticulated vertebrae incl. 2 partial cervicals, 6 partial dorsals, 6 sacrals, & numerous caudals, prox R femur, prox & distal tibiae, partial metatarsal. LACM 120602, caudal vertebra, astragalus-calcaneum, partial metatarsus/pes. LACM 128258, R premaxilla, partial L maxilla, dentaries, dorsal vertebra, distal caudal vertebra. LACM 128303, partial L dentary | ||||||||||
Reptilia
- Camarasauridae
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Camarasaurus sp.
Cope 1877
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Foster 2003 | 3 individuals | ||||||||
Reptilia
- Brachiosauridae
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Brachiosaurus sp.
Riggs 1903
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Foster 2003 | 1 individual | ||||||||
Reptilia
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Apatosaurus sp.
Marsh 1877
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Foster 2003 | 1 individual | ||||||||
Diplodocus sp.
Marsh 1878
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Foster 2003 | 1 individual | ||||||||
Reptilia
- Theropoda
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Theropoda indet.
Marsh 1881
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Foster 2003 | 4 individuals | ||||||||
includes tracks | ||||||||||
Coelurosauria indet.
Huene 1914
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Rasmussen and Callison 1981 | 3 individuals | ||||||||
Reptilia
- Pterosauria
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Pterosauria indet.
Kaup 1834
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Foster 2003 | 1 individual | ||||||||
Reptilia
- Shartegosuchidae
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cf. Hallopus sp.
Marsh 1881
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Rasmussen and Callison 1981 | 1 individual | ||||||||
= "Fruitachampsa" sp.
Clark 2011
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Foster 2003 | |||||||||
Reptilia
- Goniopholididae
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Goniopholis sp.
Owen 1842
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Foster 2003 | 2 individuals | ||||||||
Reptilia
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Macelognathus vagans
Marsh 1884
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Gohlich et al. 2005 | 2 specimens | ||||||||
LACM 4684/1282772 (L femur), 4684/133772 (cranial elements) | ||||||||||
Sphenodontidae indet.
Cope 1871
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Rasmussen and Callison 1981 | 1 individual | ||||||||
new species | ||||||||||
= Opisthias sp.
Gilmore 1909
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Foster 2003 | |||||||||
Squamata indet.
(Oppel 1811)
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Foster and Lockley 2006 | 1 specimen | ||||||||
lizard or sphenodontian track | ||||||||||
Reptilia
- Serpentes
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Serpentes indet.
Linnaeus 1758
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Foster 2003 | 1 individual | ||||||||
Reptilia
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Parviraptor gilmorei n. sp.
Evans 1996
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Evans 1996 | 5 specimens | ||||||||
LACM 4684/140572, 5572/120732, 5572/135535, 5572/135513, 5573/135533 | ||||||||||
Reptilia
- Paramacellodidae
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Saurillodon sp.
Estes 1983
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Evans 1996 | 2 specimens | ||||||||
LACM 5573/135517, 5573/120590 | ||||||||||
Paramacellodus sp.
Hoffstetter 1967
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Evans 1996 | 1 specimen | ||||||||
LACM 5573/135674 | ||||||||||
Reptilia
- Dorsetisauridae
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Dorsetisaurus sp.
Hoffstetter 1967
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Evans 1996 | 1 specimen | ||||||||
LACM 5572/120504 | ||||||||||
Mammalia
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Mammalia indet.
Linnaeus 1758
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Foster 2003 | 4 individuals | ||||||||
Mammalia
- Triconodonta
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Triconodonta indet.
Osborn 1888
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Foster 2003 | 1 individual | ||||||||
Mammalia
- Paurodontidae
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Paurodontidae indet.
Marsh 1887
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Foster 2003 | 1 individual | ||||||||
Mammalia
- Dryolestidae
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Eupantotheria indet.
Kermack and Musset 1958
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Rasmussen and Callison 1981 | 1 individual | ||||||||
new species | ||||||||||
= Dryolestidae indet.
Marsh 1879
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Foster 2003 | |||||||||
Mammalia
- Symmetrodonta
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Symmetrodonta indet.
Simpson 1925
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Foster 2003 | 1 individual | ||||||||
Mammalia
- Multituberculata
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Multituberculata indet.
Cope 1884
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Rasmussen and Callison 1981 | 3 individuals | ||||||||
new species | ||||||||||
Glirodon grandis
Engelmann and Callison 1999
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Engelmann and Callison 1999 | 2 specimens | ||||||||
LACM 120453 (partial skull), 120452 (mandible), 120688 (partial mandible), 120458 (maxilla) | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Colorado | County: | Mesa |
Coordinates: | 39.1° North, 108.8° West (view map) | ||||
Paleocoordinates: | 35.6° North, 56.1° West | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | outcrop |
Time
Period: | Jurassic | Epoch: | Late Jurassic |
Stage: | Tithonian | 10 m.y. bin: | Jurassic 6 |
Key time interval: | Early Tithonian | ||
Age range of interval: | 149.2 - 146.3 m.y. ago |
Stratigraphy
Formation: | Morrison | Member: | Brushy Basin | ||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: Base of the Brushy Basin Member of the Morrison Formation immediately above the "clay change" horizon (see Kirkland 2006, New Mexico Museum of Natural History and Science Bulletin, 36:67-95, fig. 6, pg. 93). Turner & Peterson (1999, Vertebrate Paleontology in Utah, Utah Geol. Survey Misc. Publ. 99-1, 77-114) placed the Fruita localities (listed as CO-33 in their stratigraphic sections) within the Kimmeridgian, and within their "Dinosaur Zone 2" and "charophyte-ostracod Zone 4". Stratigraphic horizons closely equivalent to the Fruitadens quarries yield 40Ar/39Ar isotopic dates of 150.3 +/- 0.3 Ma and 150.2 +/- 0.5 Ma (see Turner & Peterson 1999). This would place the Fruita quarries within the early Tithonian on recent timescales. |
Lithology and environment
Primary lithology: | sandstone |
Secondary lithology: | siltstone |
Includes fossils? | Y |
Includes fossils? | Y |
Environment: | "floodplain" |
Taphonomy
Modes of preservation: | body,trace |
Lagerst�tten type: | concentrate |
Degree of concentration: | concentrated |
Size of fossils: | macrofossils,mesofossils |
Preservation of anatomical detail: | good |
Associated major elements: | some |
Disassociated major elements: | many |
Disassociated minor elements: | many |
Fragmentation: | occasional |
Temporal resolution: | snapshot |
Collection methods and comments
Collection methods: | bulk,selective quarrying,surface (float),surface (in situ),mechanical,field collection,survey of museum collection | ||
Reason for describing collection: | taxonomic analysis | ||
Museum repositories: | LACM | ||
Collectors: | G. L. Callison & party | Collection dates: | late 1970s to early 1980s |
Metadata
Also known as: | Fruita Paleontological Area, LACM Loc. 4684, 6174, CO-33 | ||
Database number: | 71476 | ||
Authorizer: | M. Carrano, R. Benson | Enterer: | M. Carrano, R. Benson |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2007-04-26 06:34:45 | Last modified: | 2023-08-23 11:17:00 |
Access level: | the public | Released: | 2007-04-26 06:34:45 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
63779. | Anonymous. 1977. The Fruita Paleontological Report 1-82 [M. Carrano/M. Carrano] |
Secondary references:
31136 | ETE | R. J. Butler, P. M. Galton, L. B. Porro, L. M. Chiappe, D. M. Henderson and G. M. Erickson. 2010. A new Upper Jurassic heterodontosaurid from North America: lower limits of ornithischian dinosaur body size inferred from North America. Proceedings of the Royal Society B: Biological Sciences 277:375-381 [M. Carrano/M. Carrano/R. Butler] |
71347 | G. Callison and H. M. Quimby. 1984. Tiny dinosaurs: are they fully grown?. Journal of Vertebrate Paleontology 3(4):200-209 [M. Carrano/M. Carrano] | |
42336 | G. F. Engelmann and G. Callison. 1999. Glirodon grandis, a new multituberculate mammal from the Upper Jurassic Morrison Formation. In D. D. Gilette (ed.), Vertebrate Paleontology of Utah 161-178 [R. Benson/R. Benson] | |
42614 | S. E. Evans. 1996. Parviraptor (Squamata: Anguimorpha) and other lizards from the Morrison Formation at Fruita, Colorado. In M. Morales (ed.), The Continental Jurassic. Museum of Northern Arizona Bulletin 60:243-248 [M. Carrano/M. Carrano] | |
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] |
65404 | J. R. Foster and M. G. Lockley. 2006. The vertebrate ichnological record of the Morrison Formation (Upper Jurassic, North America). In J. R. Foster, S. G. Lucas (eds.), Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:203-216 [M. Carrano/M. Carrano] | |
82653 | P. M. Galton. 2002. New material of ornithischian (?Heterodontosaurid) dinosaur Echinodon (Early Cretaceous, southern England) from the Late Jurassic of Fruita near Grand Junction, Colorado, USA. Journal of Vertebrate Paleontology 22(3 (suppl.)):55A-56A [M. Carrano/M. Carrano] | |
24821 | ETE | P. M. Galton. 2007. Teeth of ornithischian dinosaurs (mostly Ornithopoda) from the Morrison Formation (Upper Jurassic) of the western United States. In K. Carpenter (ed.), Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs 17-47 [M. Carrano/M. Carrano/M. Carrano] |
44051 | U. B. Gohlich, L. M. Chiappe, J. M. Clark and H.-D. Sues. 2005. The systematic position of the Late Jurassic alleged dinosaur Macelognathus (Crocodylomorpha: Sphenosuchia). Canadian Journal of Earth Sciences 42:307-321 [P. Mannion/J. Tennant] | |
58788 | J. I. Kirkland. 1997. Fruita Paleontological Area. In P. J. Currie & K. Padian (ed.), Encyclopedia of Dinosaurs 254-256 [M. Carrano/M. Carrano] | |
65150 | J. I. Kirkland. 2006. Fruita Paleontological Area (Upper Jurassic, Morrison Formation), western Colorado: an example of terrestrial taphofacies analysis. 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 36:67-95 [M. Carrano/M. Carrano] | |
24159 | ETE | T. E. Rasmussen and G. Callison. 1981. A new species of triconodont mammal from the Upper Jurassic of Colorado. Journal of Paleontology 55(3):628-634 [M. Carrano/M. Carrano] |
46030 | G. W. Rougier, J. R. Wible, and J. A. Hopson. 1996. Basicranial anatomy of Priacodon fruitaensis (Triconodontidae, Mammalia) from the Late Jurassic of Colorado, and a reappraisal of mammaliaform interrelationships. American Museum Novitates 3183:1-38 [P. Mannion/J. Tennant] | |
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] |
61518 | D. B. Weishampel and J. B. Weishampel. 1983. Annotated localities of ornithopod dinosaurs: implications to Mesozoic paleobiogeography. The Mosasaur 1:43-87 [M. Carrano/M. Carrano] |