Mt. Kirkpatrick, Beardmore Glacier: Sinemurian - Pliensbachian, Antarctica
collected 1990-1991
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Massospondylidae
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Prosauropoda indet.
Huene 1920
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1 individual | |||||||||
= Plateosauridae indet.
Marsh 1895
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Hammer 1997 | |||||||||
= Glacialisaurus hammeri n. gen., n. sp.
Smith and Pol 2007
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Smith and Pol 2007 | |||||||||
FMNH PR1823 | ||||||||||
Reptilia
- Theropoda
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Theropoda indet.
Marsh 1881
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teeth from two species | ||||||||||
Glacialisaurus hammeri
Smith and Pol 2007
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Smith and Pol 2007 | 1 specimen | ||||||||
FMNH PR1822 | ||||||||||
= Theropoda indet.
Marsh 1881
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Carrano 2023 | |||||||||
femur | ||||||||||
Reptilia
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Tetanurae indet.
Gauthier 1986
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2 individuals | |||||||||
= Cryolophosaurus ellioti n. gen., n. sp.
Hammer and Hickerson 1994
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Hammer and Hickerson 1994 | |||||||||
Reptilia
- Dimorphodontidae
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? Dimorphodontidae indet.
Seeley 1870
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Hammer and Hickerson 1994 | 1 specimen | ||||||||
Humerus | ||||||||||
Tritylodontidae
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Tritylodontidae indet.
Cope 1884
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1 specimen | |||||||||
FMNH PR1824, an isolated upper postcanine tooth | ||||||||||
see common names |
Geography
Country: | Antarctica |
Coordinates: | 84.3° South, 166.5° East (view map) |
Paleocoordinates: | 57.5° South, 35.5° East |
Basis of coordinate: | based on nearby landmark |
Altitude: | 4000 meters |
Geographic resolution: | outcrop |
Time
Period: | Jurassic | Epoch: | Early/Lower Jurassic |
Key time interval: | Sinemurian - Pliensbachian | ||
Age range of interval: | 199.30000 - 182.70000 m.y. ago |
Stratigraphy
Formation: | Hanson | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: collected within 1 m stratigraphically and 5 m laterally, except for "3 bones", including pterosaur (which came from 50 m below). Often described as from high in the Falla Fm. but actually from low in the Hanson.
"The presence of Dicroidium odontopteroides in the Falla Formation 300 meters below the vertebrate bearing layers of the Hanson Formation, and pollen and spore assemblages from the middle part of the Falla Formation provide an upper bound of Carnian–Norian (Late Triassic) for the base of the Hanson Formation (Kyle and Schopf 1982; Farabee et al. 1989; Elliot 1996). A radiometric date of 177±2 Ma of the overlying Prebble Formation and Kirkpatrick Basalt (Heimann et al. 1994) gives a lower bound of Aalenian (earliest Middle Jurassic) for the top of the Hanson Formation. Additional radiometric dates from the top of the Hanson Formation, including a K−Ar date of 203±3 Ma (Barrett and Elliot 1972), and an Rb−Sr isochron date of 186±9 Ma (Faure and Hill 1973), suggest that the lower part of the Hanson Formation, which includes the vertebrate−bearing horizons, is probably middle Early Jurassic (Elliot 1996)." (Smith & Pol 2007:658-659). |
Lithology and environment
Primary lithology: | tuffaceous siltstone | ||
Includes fossils? | Y | ||
Lithology description: "tuffaceous siltstone" | |||
Environment: | fluvial indet. | Tectonic setting: | rift |
Geology comments: "The Hanson Formation was deposited in an active volcano-tectonic rift system formed during the breakup of Gondwana" (Smith & Pol 2007:658)
"fluviatile"; "foreland basin flood plain" |
Taphonomy
Modes of preservation: | body |
Degree of concentration: | dispersed |
Size of fossils: | macrofossils,mesofossils |
Preservation of anatomical detail: | good |
Associated major elements: | some |
Disassociated major elements: | some |
Disassociated minor elements: | some |
Fragmentation: | frequent |
Bioerosion: | frequent |
Feeding/predation traces: | tooth marks |
Temporal resolution: | time-averaged |
Spatial resolution: | parautochthonous |
Collection methods and comments
Collection methods: | selective quarrying,surface (float),surface (in situ),mechanical,field collection |
Rock censused: | 2500 kg |
Reason for describing collection: | general faunal/floral analysis |
Museum repositories: | FMNH | Collection dates: | 1990-1991 |
Collection method comments: 120-140 bones and 16 teeth in total |
Metadata
Also known as: | NSF-Augustana College | ||
Database number: | 47135 | ||
Authorizer: | M. Carrano | Enterer: | M. Carrano, S. Miller |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2005-02-15 11:22:13 | Last modified: | 2015-01-23 10:44:17 |
Access level: | the public | Released: | 2005-02-15 11:22:13 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
14703. | ETE | W. R. Hammer and W. J. Hickerson. 1993. A new Jurassic dinosaur fauna from Antarctica. Journal of Vertebrate Paleontology 13(3, suppl.):40A [M. Carrano/M. Carrano] |
Secondary references:
14199 | ETE | M. T. Carrano. 2023. Taxonomic opinions on the Dinosauria. [M. Carrano/M. Carrano/M. Carrano] |
12574 | ETE | W. R. Hammer. 1997. Jurassic dinosaurs from Antarctica. In D. L. Wolberg (ed.), DINOFEST: Proceedings of a Symposium Held at the Academy of Natural Sciences, Academy of Natural Sciences, Philadelphia 249-251 [M. Carrano/M. Carrano/M. Carrano] |
50511 | W. R. Hammer and W. J. Hickerson. 1993. A brief review of Mesozoic terrestrial vertebrates from the Transantarctic Mountains including evidence of a scavenging theropod. Antarctic Journal of the United States 28(5):33-35 [M. Carrano/M. Carrano] | |
12567 | ETE | W. R. Hammer, W. J. Hickerson, and R. W. Slaughter. 1994. A dinosaur assemblage from the Transantarctic Mountains. Antarctic Journal of the United States, Review 1994 29(5):31-33 [M. Carrano/M. Carrano/M. Carrano] |
12572 | ETE | W. R. Hammer and W. J. Hickerson. 1994. A crested theropod dinosaur from Antarctica. Science 264:828-830 [M. Carrano/M. Carrano/M. Carrano] |
12573 | ETE | W. R. Hammer, W. J. Hickerson, and R. W. Slaughter. 1995. Scavenging and (?) choking Jurassic theropods from Antarctica. Geological Society of America Abstracts-with-Programs 27(3):55 [M. Carrano/M. Carrano/M. Carrano] |
12576 | ETE | W. R. Hammer and W. J. Hickerson. 1996. Implications of an Early Jurassic vertebrate fauna from Antarctica. In M. Morales (ed.), The Continental Jurassic, Museum of Northern Arizona Bulletin 60:215-218 [M. Carrano/M. Carrano/M. Carrano] |
12575 | ETE | W. R. Hammer and W. J. Hickerson. 1999. Gondwana dinosaurs from the Jurassic of Antarctica. In. Y. Tomida, T. H. Rich, and P. Vickers-Rich (eds.), Proceedings of the Second Gondwanan Dinosaur Symposium, National Science Museum Monographs 15:211-217 [M. Carrano/M. Carrano/M. Carrano] |
27188 | ETE | W. R. Hammer and N. D. Smith. 2008. A tritylodont postcanine from the Hanson Formation of Antarctica. Journal of Vertebrate Paleontology 28(1):269-273 [M. Carrano/M. Carrano/R. Butler] |
12945 | ETE | T. H. Rich. 1996. Significance of polar dinosaurs in Gondwana. Memoirs of the Queensland Museum 39(3):711-717 [M. Carrano/M. Carrano/M. Carrano] |
54137 | T. H. Rich, R. A. Gangloff, and W. R. Hammer. 1997. Polar dinosaurs. In P. J. Currie, K. Padian (eds.), Encyclopedia of Dinosaurs 562-573 [M. Carrano/M. Carrano/P. Wagner] | |
14834 | ETE | N. Smith, W. R. Hammer, and P. J. Currie. 2005. Osteology and phylogenetic relationships of Cryolophosaurus ellioti (Dinosauria: Theropoda): implications for basal theropod evolution. Journal of Vertebrate Paleontology 25(3, suppl.):116A-117A [M. Carrano/M. Carrano] |
26326 | ETE | N. D. Smith and D. Pol. 2007. Anatomy of a basal sauropodomorph dinosaur from the Early Jurassic Hanson Formation of Antarctica. Acta Palaeontologica Polonica 52(4):657-674 [M. Carrano/S. Miller/M. Carrano] |