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Howe-Stephens Quarry, Big Horn County, Wyoming, USA

Lat/Long (Decimal)44.65,-107.817
Co-ordinates Derivationestimated from map
Given LocationWyoming, United States
Mindat.org Region (for given coordinates)Big Horn County, Wyoming, USA

Collections

CollectionReferenceStratigraphic NameCommentsLithologyAge
Howe-Scott QuarryTschopp E., Mateus O. (2017)MorrisonStratigraphically, it lies just slightly above the Howe-Stephens Quarry, 30 m above the J-5, and 30 m below the K-1 unconformitiessandstone157.3 - 152.1 Ma
Jurassic
Howe-Stephens QuarryAyer J. (1999)Morrison - Brushy Basinlower or middle part of formation (below "clay change"), 10 m above Howe Qsandstone157.3 - 152.1 Ma
Jurassic

Recorded Fossils

Accepted NameHierarchyAge
Plantae
kingdom
Plantae157.3 - 152.1 Ma
Jurassic
Araucaria sp.
genus
Plantae : Tracheophyta : Pinopsida : Pinales : Araucariaceae : Araucaria157.3 - 152.1 Ma
Jurassic
Dryosaurus sp.
genus
Animalia : Chordata : Reptilia : Dinosauria : Dryosauridae : Dryosaurus157.3 - 152.1 Ma
Jurassic
Othnielosaurus sp.
genus
Animalia : Chordata : Reptilia : Dinosauria : Othnielosaurus157.3 - 152.1 Ma
Jurassic
Hesperosaurus sp.
genus
Animalia : Chordata : Reptilia : Dinosauria : Stegosauridae : Hesperosaurus157.3 - 152.1 Ma
Jurassic
Hesperosaurus mjosi
species
Animalia : Chordata : Ornithischia : Stegosauridae : Hesperosaurus : Hesperosaurus mjosi157.3 - 152.1 Ma
Jurassic
Stegosaurus sp.
genus
Animalia : Chordata : Reptilia : Dinosauria : Stegosauridae : Stegosaurus157.3 - 152.1 Ma
Jurassic
Dipnoi
subclass
Animalia : Chordata : Osteichthyes : Dipnoi157.3 - 152.1 Ma
Jurassic
Allosaurus sp.
genus
Animalia : Chordata : Reptilia : Dinosauria : Allosauridae : Allosaurus157.3 - 152.1 Ma
Jurassic
Brachiosauridae
family
Animalia : Chordata : Reptilia : Dinosauria : Brachiosauridae157.3 - 152.1 Ma
Jurassic
Brachiosaurus sp.
genus
Animalia : Chordata : Reptilia : Dinosauria : Brachiosauridae : Brachiosaurus157.3 - 152.1 Ma
Jurassic
Camarasaurus sp.
genus
Animalia : Chordata : Reptilia : Dinosauria : Camarasauridae : Camarasaurus157.3 - 152.1 Ma
Jurassic
Apatosaurus sp.
genus
Animalia : Chordata : Reptilia : Dinosauria : Diplodocidae : Apatosaurus157.3 - 152.1 Ma
Jurassic
Barosaurus sp.
genus
Animalia : Chordata : Reptilia : Dinosauria : Diplodocidae : Barosaurus157.3 - 152.1 Ma
Jurassic
Diplodocidae
family
Animalia : Chordata : Reptilia : Dinosauria : Diplodocidae157.3 - 152.1 Ma
Jurassic
Diplodocus sp.
genus
Animalia : Chordata : Reptilia : Dinosauria : Diplodocidae : Diplodocus157.3 - 152.1 Ma
Jurassic
Galeamopus pabsti
species
Animalia : Chordata : Saurischia : Diplodocidae : Galeamopus : Galeamopus pabsti157.3 - 152.1 Ma
Jurassic
Theropoda
unranked clade
Animalia : Chordata : Saurischia : Theropoda157.3 - 152.1 Ma
Jurassic

References

Ayer J. (1999) The Howe Ranch Dinosaurs: 10 Years of Dinosaur Digging in Wyoming, Sauriermuseum, Aathal, Switzerland, 1-95
Ikejiri T., Schwarz D., et al (2005) A nearly complete skeleton of a baby sauropod from the lower Morrison Formation of the Howe Stephens Quarry, Wyoming: "little steps" into diplodocid ontogeny and taxonomy, Journal of Vertebrate Paleontology 25 3, suppl., 73A
Christiansen N. A., Tschopp E. (2010) Exceptional stegosaur integument impressions from the Upper Jurassic Morrison Formation of Wyoming, Swiss Journal of Geosciences 103 2, 163-171 doi:10.1007/s00015-010-0026-0
Carballido J. L., Marpmann J. S., et al (2012) New information on a juvenile sauropod specimen from the Morrison Formation and the reassessment of its systematic position, Palaeontology 55 3, 567-582 doi:10.1111/j.1475-4983.2012.01139.x
Tschopp E., Mateus O., et al (2015) A specimen-level phylogenetic analysis and taxonomic revision of Diplodocidae (Dinosauria, Sauropoda), PeerJ 3, e857 doi:10.7717/peerj.857
Tschopp E., Mateus O. (2017) Osteology of Galeamopus pabsti sp. nov. (Sauropoda: Diplodocidae), with implications for neurocentral closure timing, and the cervico-dorsal transition in diplodocids, PeerJ 5, e3179:1-126
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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