Mesa Redonda tracksite [general]: Norian, New Mexico
collected by R. Abercrombie 1934

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Grallatoridae
Grallator sp. Hitchcock 1858
Lucas et al. 1986 1 specimen
MDM 248
aff. Grallator sp. Hitchcock 1858
Hunt et al. 2000 1 specimen
UMMP 16161
Grallator cursorius Hitchcock 1858
Hunt and Lucas 2007
Reptilia
Pseudotetrasauropus sp. Ellenberger 1965
Hunt et al. 1993 1 individual
Reptilia - Otozoidae
Evazoum sirigui Nicosia and Loi 2003
Hunt and Lucas 2007
Reptilia - Chirotheriidae
Brachychirotherium eyermani (Baird 1957)
Hunt and Lucas 2007 2 specimens
Reptilia
Rhynchosauroides sp. Maidwell 1911
Hunt and Lucas 2007
Mammalia
Ameghinichnus sp. Casamiquela 1961
Hunt and Lucas 2007
see common names

Geography
Country:United States State/province:New Mexico County:Quay
Coordinates: 35.0° North, 103.6° West (view map)
Paleocoordinates:9.9° North, 43.2° West
Basis of coordinate:stated in text
Altitude:1331 meters
Geographic resolution:small collection
Time
Period:Triassic Epoch:Late/Upper Triassic
Stage:Norian 10 m.y. bin:Triassic 4
Key time interval:Norian
Age range of interval:227.00000 - 208.50000 m.y. ago
Stratigraphy
Geological group:Chinle Formation:Redonda Member:San Jon Creek
Stratigraphic resolution:group of beds
Stratigraphy comments: "Apachean"; 14 m below contact between Redonda Fm. and overlying Entrada Sandstone.
Lithology and environment
Primary lithology:massive,bioturbation,fine,quartzose,gray,green calcareous "limestone"
Secondary lithology: siltstone
Includes fossils?Y
Includes fossils?Y
Lithology description: There are two beds of tracks in limestones that contain abundant fine-grained subangular quartz and a few oolites. A third bed contianed a track found atop a siltstone. Bed is "quartzose, fine-grained, and very calcareous. It is light olive-gray unweathered, weathers to grayish green and pale yellowish brown, and is intensively bioturbated (massive)."
Environment:lacustrine indet.
Taphonomy
Modes of preservation:cast,mold/impression,trace
Size of fossils:macrofossils
Spatial orientation:life position
Disassociated major elements:some
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:selective quarrying,surface (in situ),field collection
Reason for describing collection:general faunal/floral analysis
Museum repositories:NMMNH,ROM,UMMP
Collectors:R. Abercrombie Collection dates:1934
Metadata
Database number:52168
Authorizer:M. Carrano Enterer:K. Maguire, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-07-28 13:45:38 Last modified:2021-09-28 21:16:24
Access level:the public Released:2005-07-28 13:45:38
Creative Commons license:CC BY
Reference information

Primary reference:
78209. J. T. Gregory. 1972. Vertebrate faunas of the Dockum Group, Triassic, eastern New Mexico and west Texas. In V. C. Kelly & F. D. Trauger (ed.), New Mexico Geological Society, 23rd Field Conference, East Central New Mexico. New Mexico Geological Society Guidebook 23:120-123 [M. Carrano/M. Carrano]

Secondary references:

28129ETE A. P. Hunt, M. G. Lockley, and S. G. Lucas. 1993. Vertebrate and invertebrate tracks and trackways from Upper Triassic strata of the Tucumcari Basin, east-central New Mexico, USA. In S. G. Lucas and M. Morales (eds.), The Nonmarine Triassic. New Mexico Museum of Natural History and Science Bulletin 3:199-201 [M. Carrano/M. Carrano]
14020ETE A. P. Hunt, S. G. Lucas, and K. K. Kietzke. 1989. Dinosaur footprints from the Redonda Member of the Chinle Formation (Upper Triassic), east-central New Mexico. In D. D. Gillette and M. G. Lockley (eds.), Dinosaur Tracks and Traces 277-280 [M. Carrano/K. Maguire/M. Carrano]
31825 A. P. Hunt and S. G. Lucas. 1993. Triassic vertebrate paleontology and biochronology of New Mexico. In S. G. Lucas & J. Zidek (ed.), Vertebrate Paleontology in New Mexico. New Mexico Museum of Natural History and Science Bulletin 2:49-60 [R. Butler/R. Butler/M. Carrano]
18009ETE A. P. Hunt, S. G. Lucas, M. G. Lockley and A. B. Heckert. 2000. Occurrence of the dinosaurian ichnogenus Grallator in the Redonda Formation (Upper Triassic: Norian) of eastern New Mexico. In S. G. Lucas and A. B. Heckert (eds.), Dinosaurs of New Mexico. New Mexico Museum of Natural History and Science Bulletin 17:39-41 [M. Carrano/M. Carrano]
27985ETE A. P. Hunt and S. G. Lucas. 2007. Late Triassic tetrapod tracks of western North America. In S. G. Lucas & J. A. Spielmann (eds.), Triassic of the American West. New Mexico Museum of Natural History and Science Bulletin 40:215-230 [M. Carrano/M. Carrano]
65923 H. Klein, S. G. Lucas, and H. Haubold. 2006. Tetrapod track assemblage of the Redonda Formation (Upper Triassic, Chinle Group) in east-central New Mexico—re-evaluation of ichnofaunal diversity from studies of new material. In J. D. Harris, S. G. Lucas, J. A. Spielmann, M. G. Lockley, A. R. C. Milner, J. I. Kirkland (eds.), The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:241-250 [M. Carrano/M. Carrano/P. Wagner]
76668 H. Klein and S. G. Lucas. 2021. The Triassic Tetrapod Footprint Record. New Mexico Museum of Natural History & Science Bulletin 83:1-194 [M. Carrano/M. Carrano/M. Carrano]
61886 M. G. Lockley and A. P. Hunt. 1995. Dinosaur Tracks and Other Fossil Footprints of the Western United States xxi-338 [M. Carrano/M. Carrano]
43968 M. G. Lockley, S. G. Lucas, and A. P. Hunt. 2000. Dinosaur tracksites in New Mexico: a review. In S. G. Lucas and A. B. Heckert (eds.), Dinosaurs of New Mexico. New Mexico Museum of Natural History and Science Bulletin 7:9-16 [M. Carrano/M. Carrano]
55930 S. G. Lucas, A. P. Hunt, and K. K. Kietzke. 1986. Late Triassic dinosaur footprints from east-central New Mexico. In D. D. Gillette (ed.), First International Symposium on Dinosaur Tracks and Traces, Abstracts with Program 19 [M. Carrano/M. Carrano]