Paddy's Island, West Medford: Norian, Canada
collected by A. Brown 1983
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Procolophonidae
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Hypsognathus sp.
Gilmore 1928
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1 individual | |||||||||
NSM 998GF45.1, skull associated with an incomplete interclavicle and small fragments of vertebrae and limb-bones | ||||||||||
= Hypsognathus fenneri
Gilmore 1928
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Sues et al. 2000 | |||||||||
see common names |
Geography
Country: | Canada | State/province: | Nova Scotia | County: | Kings County |
Coordinates: | 45.2° North, 64.4° West (view map) | ||||
Paleocoordinates: | 20.8° North, 12.6° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
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: | Chatham | Formation: | Blomidon | Member: | Red Head |
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: "The Blomidon Formation forms part of the Fundy Group in the Fundy basin of the Newark Supergroup and ranges in age from the Norian to the Hettangian. NSM 998GF45.1 was found in the basal portion of the Blomidon Formation, in the upper part of the Red Head Member, about 15 m below the base of the overlying undivided remainder of the formation. Based on stratigraphic correlation with the Newark basin and on the polarity stratigraphy in the GAV-3 core through the
Blomidon Formation, the Red Head Member near Paddy’s Island most likely correlates with polarity zone E15 and members R–U of the Passaic Formation (Olsen and Kent, in press)." Sues et al. (2000: fig. 1) show this specimen as Norian in age. |
Lithology and environment
Primary lithology: | massive,pebbly sandstone | ||
Includes fossils? | Y | ||
Lithology description: "The specimen was preserved in a massive, pebbly sandstone in the middle of a fining-upward sequence of beds made up of trough-cross-bedded gravel and pebbly sandstone that grades upwards into fine to medium tabular beds of sandstone, which are capped by red mudstone. The base of this sequence cuts about 1 m down into underlying red mudstone and sandstone. The sandstone layer containing the fossil shows no obvious bedding and is poorly sorted, perhaps due to bioturbation." | |||
Environment: | terrestrial indet. | Tectonic setting: | rift |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Preservation of anatomical detail: | good |
Associated major elements: | all |
Temporal resolution: | snapshot |
Spatial resolution: | parautochthonous |
Collection methods and comments
Collection methods: | surface (in situ),survey of museum collection | ||
Reason for describing collection: | taxonomic analysis | ||
Collectors: | A. Brown | Collection dates: | 1983 |
Collection method comments: NSM: Nova Scotia Museum |
Metadata
Database number: | 89142 | ||
Authorizer: | R. Butler, M. Carrano | Enterer: | R. Butler, M. Carrano |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2009-05-06 07:01:09 | Last modified: | 2022-11-04 13:32:16 |
Access level: | the public | Released: | 2009-05-06 07:01:09 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
14907. | ETE | P. E. Olsen and D. Baird. 1986. The ichnogenus Atreipus and its significance for Triassic biostratigraphy. In: K. Padian (ed.), The Beginning of the Age of Dinosaurs: Faunal Changes Across the Triassic-Jurassic Boundary. Cambridge University Press, Cambridge 61-87 [M. Carrano/K. Maguire/M. Carrano] |
Secondary references:
83033 | P. E. Olsen. 1989. Stop 10.2: Paddy's Island near Medford, NS. In P. E. Olsen, R. W. Schlische, & P. J. W. Gore (eds.), Tectonic, Depositional, and Paleoecological History of Early Mesozoic Rift Basins, Eastern North America. Gulf, North Carolina, USA to Parrsboro, Nova Scotia, Canada. July 20–30, 1989. International Geological Congress Field Trip T-351 140-142 [M. Carrano/M. Carrano] | |
26952 | H.-D. Sues, P. E. Olsen, D. M. Scott and P. S. Spencer. 2000. Cranial osteology of Hypsognathus fenneri, a latest Triassic procolophonid reptile from the Newark Supergroup of Eastern North America. Journal of Vertebrate Paleontology 20(2):275-284 [J. Mueller/J. Dummasch/R. Butler] |