Species
Valid Extinct

Richardoestesia isosceles

Sankey 2001

No Wikipedia summary available.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
70
Group
Dinosaures
Carnivore Ground dwelling Terrestrial
Classification
Dinosauria Unranked clade
Theropoda Unranked clade
Neotheropoda Unranked clade
Averostra Unranked clade
Tetanurae Unranked clade
Coelurosauria Unranked clade
Maniraptora Unranked clade
Paraves Unranked clade
Deinonychosauria Infraorder
Dromaeosauridae Family
Richardoestesia Genus
Richardoestesia isosceles Species
Fossil sites 70 geolocated sites
Distribution
Top countries
🇺🇸 United States
43
🇨🇦 Canada
27
Geological formations
Aguja
8
Oldman
4
Mesaverde
2
Lance
2
Iron Springs
1
Temporal distribution
Maastrichtian (72.2–66 Ma)
31
Campanian (83.6–72.2 Ma)
21
Santonian (85.7–83.6 Ma)
17
Cenomanian (100.5–93.9 Ma)
1
Bibliography
Original description
J. T. Sankey. 2001. Late Campanian southern dinosaurs, Aguja Formation, Big Bend, Texas. Journal of Paleontology 75(1):208-215 DOI ↗
Bibliography (16)
J. G. Eaton, J. D. Gardner, and J. I. Kirkland, D. B. Brinkman, R. L. Nydam. 2014. Vertebrates of the Iron Springs Formation, Upper Cretaceous, southwestern Utah. Geology of Utah's Far South. Utah Geological Association Publication 43
T. S. Kelly. 2014. Preliminary report on the mammals form Lane's Little Jaw Site Quarry: a latest Cretaceous (earliest Puercan?) local fauna, Hell Creek Formation, southeastern Montana. Paludicola 10(1):50-91
T. E. Williamson and S. L. Brusatte. 2014. Small theropod teeth from the Late Cretaceous of the San Juan Basin, northwestern New Mexico and their implications for understanding latest Cretaceous dinosaur evolution. PLoS ONE 9(4):e93190:1-23 DOI ↗
D. W. Larson and P. J. Currie. 2013. Multivariate analyses of small theropod dinosaur teeth and implications for paleoecological turnover through time. PLoS ONE 8(1):e54329:1-14 DOI ↗
D. C. Evans, P. M. Barrett, and K. L. Seymour. 2012. Revised identification of a reported Iguanodon-grade ornithopod tooth from the Scollard Formation, Alberta, Canada. Cretaceous Research 33(1):11-14 DOI ↗
D. W. Larson. 2008. Diversity and variation of theropod dinosaur teeth from the uppermost Santonian Milk River Formation (Upper Cretaceous), Alberta: a quantitative method supporting identification of the oldest dinosaur tooth assemblage in Canada. Canadian Journal of Earth Sciences 45(12):1455-1468 DOI ↗
J. T. Sankey. 2008. Diversity of latest Cretaceous (late Maastrichtian) small theropods and birds: teeth from the Lance and Hell Creek formations, USA. Vertebrate Microfossil Assemblages: Their Role in Paleoecology and Paleobiogeography. Indiana University Press, Bloomington
J. T. Sankey. 2008. Vertebrate paleoecology from microsites, Talley Mountain, Upper Aguja Formation (Late Cretaceous), Big Bend National Park, Texas, USA. Vertebrate Microfossil Assemblages: Their Role in Paleoecology and Paleobiogeography
L. E. Wilson. 2008. Comparative taphonomy and paleoecological reconstruction of two microvertebrate accumulations from the Late Cretaceous Hell Creek Formation (Maastrichtian), eastern Montana. Palaios 23:289-297 DOI ↗
J. R. Garrison, Jr., D. B. Brinkman, and D. J. Nichols, P. Layer, D. L. Burge, D. Thayn. 2007. A multidisciplinary study of the Lower Cretaceous Cedar Mountain Formation, Mussentuchit Wash, Utah: a determination of the paleoenvironment and paleoecology of the Eolambia caroljonesa dinosaur quarry. Cretaceous Research 28:461-494 DOI ↗
D. G. DeMar, Jr. and B. H. Breithaupt. 2006. The nonmammalian vertebrate microfossil assemblages of the Mesaverde Formation (Upper Cretaceous, Campanian) of the Wind River and Bighorn Basins, Wyoming. Late Cretaceous Vertebrates from the Western Interior. New Mexico Museum of Natural History and Science Bulletin 35:33-54
M. T. Carrano. 2005. Fossil Vertebrate Collections, University of California Museum of Paleontology
J. T. Sankey, B. R. Standhardt, and J. A. Schiebout. 2005. Theropod teeth from the Upper Cretaceous (Campanian-Maastrichtian), Big Bed National Park, Texas. The Carnivorous Dinosaurs. Indiana University Press, Bloomington
D. A. Pearson, T. Schaefer, and K. R. Johnson, D. J. Nichols, J. P. Hunter. 2002. Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota. The Hell Creek Formation and the Cretaceous-Tertiary Boundary in the Northern Great Plains: An Integrated Continental Record of the End of the Cretaceous, Geological Society of America Special Paper 361:145-167 DOI ↗
J. T. Sankey. 2001. Late Campanian southern dinosaurs, Aguja Formation, Big Bend, Texas. Journal of Paleontology 75(1):208-215 DOI ↗
J. T. Sankey. 1998. Vertebrate paleontology and magnetostratigraphy, upper Aguja Formation (late Campanian), Big Bend National Park, Texas. Journal of Vertebrate Paleontology 18(3, suppl.):75A DOI ↗