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Hayden Quarry, Rio Arriba County, New Mexico, USA

Lat/Long (Decimal)36.3238,-106.475
Co-ordinates Derivationbased on nearby landmark
Given LocationNew Mexico, United States
Mindat.org Region (for given coordinates)Rio Arriba County, New Mexico, USA

Collections

CollectionReferenceStratigraphic NameCommentsLithologyAge
Hayden Quarry, Ghost Ranch (site 2)Nesbitt S. J., Smith N. D., et al (2009)Chinle - Petrified Forestlower part of the member; "The Hayden Quarry has been dated to ~215 to 213 million years ago"
"Determining absolute ages of the Chinle Formation is difficult because of a lack of available radiometric dates and comprehensive paleomagnetic records. The best age estimates come from palynological and vertebrate biostratigraphy. Litwin and his colleagues (1986; Litwin et al. 1991) described Norian-aged palynological assemblages from the approximate level of the Canjilon Quarry, and assemblages fr
conglomerate228 - 208.5 Ma
Late/Upper Triassic
Hayden Quarry, Ghost Ranch (site 3)Irmis R. B., Nesbitt S. J., et al (2007)Chinle - Petrified Forestlower part of the member; "The Hayden Quarry has been dated to ~215 to 213 million years ago."
"Determining absolute ages of the Chinle Formation is difficult because of a lack of available radiometric dates and comprehensive paleomagnetic records. The best age estimates come from palynological and vertebrate biostratigraphy. Litwin and his colleagues (1986; Litwin et al. 1991) described Norian-aged palynological assemblages from the approximate level of the Canjilon Quarry, and assemblages
conglomerate228 - 208.5 Ma
Late/Upper Triassic
Hayden Quarry, Ghost Ranch (site 4)Nesbitt S. J., Smith N. D., et al (2009)Chinle - Petrified Forestlower part of the member; "The Hayden Quarry has been dated to ~215 to 213 million years ago."
"Determining absolute ages of the Chinle Formation is difficult because of a lack of available radiometric dates and comprehensive paleomagnetic records. The best age estimates come from palynological and vertebrate biostratigraphy. Litwin and his colleagues (1986; Litwin et al. 1991) described Norian-aged palynological assemblages from the approximate level of the Canjilon Quarry, and assemblages
conglomerate228 - 208.5 Ma
Late/Upper Triassic

Recorded Fossils

Accepted NameHierarchyAge
Dromomeron romeri
species
Animalia : Chordata : Reptilia : Lagerpetonidae : Dromomeron : Dromomeron romeri228 - 208.5 Ma
Late/Upper Triassic
Mystriosuchini
unranked clade
Animalia : Chordata : Reptilia : Eosuchia : Parasuchidae : Mystriosuchini228 - 208.5 Ma
Late/Upper Triassic
Vivaron haydeni
species
Animalia : Chordata : Reptilia : Crocodylia : Rauisuchidae : Vivaron : Vivaron haydeni228 - 208.5 Ma
Late/Upper Triassic
Silesauridae
unranked clade
Animalia : Chordata : Reptilia : Eosuchia : Silesauridae228 - 208.5 Ma
Late/Upper Triassic
Rioarribasuchus chamaensis
species
Animalia : Chordata : Reptilia : Eosuchia : Stagonolepididae : Rioarribasuchus : Rioarribasuchus chamaensis228 - 208.5 Ma
Late/Upper Triassic
Typothorax coccinarum
species
Animalia : Chordata : Reptilia : Stagonolepididae : Typothorax : Typothorax coccinarum228 - 208.5 Ma
Late/Upper Triassic
Drepanosaurus unguicaudatus
species
Animalia : Chordata : Reptilia : Drepanosauridae : Drepanosaurus : Drepanosaurus unguicaudatus228 - 208.5 Ma
Late/Upper Triassic
Coelophysoidea
superfamily
Animalia : Chordata : Saurischia : Podokesauridae : Coelophysoidea228 - 208.5 Ma
Late/Upper Triassic
Chindesaurus bryansmalli
species
Animalia : Chordata : Reptilia : Dinosauria : Herrerasauridae : Chindesaurus : Chindesaurus bryansmalli228 - 208.5 Ma
Late/Upper Triassic
Tawa hallae
species
Animalia : Chordata : Saurischia : Tawa : Tawa hallae228 - 208.5 Ma
Late/Upper Triassic

References

Irmis R. B., Nesbitt S. J., et al (2007) A Late Triassic dinosauromorph assemblage from New Mexico and the rise of dinosaurs, Science 317, 358-361
Nesbitt S. J., Smith N. D., et al (2009) A complete skeleton of a Late Triassic saurischian and the early evolution of dinosaurs, Science 326, 1530-1533 doi:10.1126/science.1180350
Nesbitt S. J., Sidor C. A., et al (2010) Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira, Nature 464, 95-98 doi:10.1038/nature08718
Pritchard A. C., Turner A. H., et al (2016) Extreme Modification of the Tetrapod Forelimb in a Triassic Diapsid Reptile, Current Biology 26 20, 2779-2786 doi:10.1016/j.cub.2016.07.084
Lessner E. J., Stocker M. R., et al (2016) A new rauisuchid (Archosauria, Pseudosuchia) from the Upper Triassic (Norian) of New Mexico increases the diversity and temporal range of the clade, PeerJ 4, e2336
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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