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Cornwallis, Alaska, USA

FormationCornwallis
Age:222 - 209 Ma
Late/Upper Triassic
IntervalNorian
Lithologylimestone
Number of Collections8
Number of Occurrences51

Recorded Sample Locations

LocationRegionStratigraphic Name
Flounder CoveKuiu Island, Petersburg Borough, Alaska, USACornwallis
Big Spruce IslandAlaska, USACornwallis
KouskAlaska, USACornwallis
Alexander TerraneHoonah-Angoon Census Area, Alaska, USACornwallis
USGS M1906 Cornwallis PeninsulaKuiu Island, Petersburg Borough, Alaska, USACornwallis
USGS 11406 Kuiu IslandKuiu Island, Petersburg Borough, Alaska, USACornwallis
USGS M1917 Cornwallis PeninsulaAlaska, USACornwallis

Recorded Fossils

Accepted NameHierarchyAge
Plantae
kingdom
1Plantae228 - 208.5 Ma
Late/Upper Triassic
Spiriferina sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Spiriferinidae : Spiriferina228 - 208.5 Ma
Late/Upper Triassic
Dagyspirifer fascicostata
species
7Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Spondylospiridae : Dagyspirifer : Dagyspirifer fascicostata228 - 208.5 Ma
Late/Upper Triassic
Pseudospondylospira perplexa
species
7Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Spondylospiridae : Pseudospondylospira : Pseudospondylospira perplexa228 - 208.5 Ma
Late/Upper Triassic
Spondylospira lewesensis
species
7Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Spondylospiridae : Spondylospira : Spondylospira lewesensis228 - 208.5 Ma
Late/Upper Triassic
Terebratula sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Terebratulida : Terebratulidae : Terebratula228 - 208.5 Ma
Late/Upper Triassic
Astraeomorpha crassisepta
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Thamnasteriidae : Astraeomorpha : Astraeomorpha crassisepta228 - 208.5 Ma
Late/Upper Triassic
Kompsasteria oligocystis
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Cyclophylliidae : Kompsasteria : Kompsasteria oligocystis228 - 208.5 Ma
Late/Upper Triassic
Gablonzeria profunda
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Gablonzeriidae : Gablonzeria : Gablonzeria profunda228 - 208.5 Ma
Late/Upper Triassic
Distichomeandra sp.
genus
6Animalia : Cnidaria : Anthozoa : Scleractinia : Margarophylliidae : Distichomeandra228 - 208.5 Ma
Late/Upper Triassic
Distichomeandra austriaca
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Margarophylliidae : Distichomeandra : Distichomeandra austriaca228 - 208.5 Ma
Late/Upper Triassic
Distichomeandra minor
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Margarophylliidae : Distichomeandra : Distichomeandra minor228 - 208.5 Ma
Late/Upper Triassic
Margarosmilia richthofeni
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Procyclolitidae : Margarosmilia : Margarosmilia richthofeni228 - 208.5 Ma
Late/Upper Triassic
Ampakabastraea cowichanensis
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Pamiroseriidae : Ampakabastraea : Ampakabastraea cowichanensis228 - 208.5 Ma
Late/Upper Triassic
Crassistella sp.
genus
6Animalia : Cnidaria : Anthozoa : Scleractinia : Pamiroseriidae : Crassistella228 - 208.5 Ma
Late/Upper Triassic
Crassistella juvavica
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Pamiroseriidae : Crassistella : Crassistella juvavica228 - 208.5 Ma
Late/Upper Triassic
Pamiroseris borealis
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Pamiroseriidae : Pamiroseris : Pamiroseris borealis228 - 208.5 Ma
Late/Upper Triassic
Pamiroseris meriani
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Pamiroseriidae : Pamiroseris : Pamiroseris meriani228 - 208.5 Ma
Late/Upper Triassic
Distichophyllia norica
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Reimaniphylliidae : Distichophyllia : Distichophyllia norica228 - 208.5 Ma
Late/Upper Triassic
Kuhnastraea decussata
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Reimaniphylliidae : Kuhnastraea : Kuhnastraea decussata228 - 208.5 Ma
Late/Upper Triassic
Paracuifia jennieae
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Reimaniphylliidae : Paracuifia : Paracuifia jennieae228 - 208.5 Ma
Late/Upper Triassic
Retiophyllia frechi
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Reimaniphylliidae : Retiophyllia : Retiophyllia frechi228 - 208.5 Ma
Late/Upper Triassic
Retiophyllia norica
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Reimaniphylliidae : Retiophyllia : Retiophyllia norica228 - 208.5 Ma
Late/Upper Triassic
Retiophyllia robusta
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Reimaniphylliidae : Retiophyllia : Retiophyllia robusta228 - 208.5 Ma
Late/Upper Triassic
Meandrostylis grandiseptus
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Meandrostylis : Meandrostylis grandiseptus228 - 208.5 Ma
Late/Upper Triassic
Stylophyllum pygmaeum
species
7Animalia : Cnidaria : Anthozoa : Scleractinia : Stylophyllidae : Stylophyllum : Stylophyllum pygmaeum228 - 208.5 Ma
Late/Upper Triassic
Bivalvia
class
3Animalia : Mollusca : Bivalvia228 - 208.5 Ma
Late/Upper Triassic
Ostrea sp.
genus
6Animalia : Mollusca : Bivalvia : Ostreida : Ostreidae : Ostrea228 - 208.5 Ma
Late/Upper Triassic
Pteria sp.
genus
6Animalia : Mollusca : Bivalvia : Ostreida : Pteriidae : Pteria228 - 208.5 Ma
Late/Upper Triassic
Gastropoda
class
3Animalia : Mollusca : Gastropoda228 - 208.5 Ma
Late/Upper Triassic
Porifera
phylum
2Animalia : Porifera228 - 208.5 Ma
Late/Upper Triassic
Stellispongia subsphaerica
species
7Animalia : Porifera : Calcarea : Stellispongiidae : Stellispongia : Stellispongia subsphaerica228 - 208.5 Ma
Late/Upper Triassic
Parauvanella ferdowsensis
species
7Animalia : Porifera : Demospongea : Agelasida : Colospongiidae : Parauvanella : Parauvanella ferdowsensis228 - 208.5 Ma
Late/Upper Triassic
Amblysiphonella sp.
genus
6Animalia : Porifera : Hexactinellida : Sebargasiidae : Amblysiphonella228 - 208.5 Ma
Late/Upper Triassic
Nevadathalamia cylindrica
species
7Animalia : Porifera : Demospongea : Vaceletida : Verticillitidae : Nevadathalamia : Nevadathalamia cylindrica228 - 208.5 Ma
Late/Upper Triassic
Nevadathalamia minima
species
7Animalia : Porifera : Demospongea : Vaceletida : Verticillitidae : Nevadathalamia : Nevadathalamia minima228 - 208.5 Ma
Late/Upper Triassic

References

Buddington A. F., Chapin T. (1929) Geology and mineral deposits of southeastern Alaska, United States Geological Survey Bulletin 800, 1-398
Hoover P. R. (1991) Late Triassic cyrtinoid spiriferinacean brachiopods from western North America and their biostratigraphic and biogeographic implications, Bulletins of American Paleontology 100 337, 63-109
Senowbari-Daryan B., Caruthers A. H., et al (2008) The First Upper Triassic Silicified Hypercalcified Sponges from the Alexander Terrane, Gravina Island and Keku Strait, Southeast Alaska, Journal of Paleontology 82 2, 344-350
Caruthers A. H., Stanley , Jr. G. D. (2008) Systematic analysis of upper triassic silicified scleractinian corals from Wrangellia and the Alexander Terrane, Alaska and British Columbia, Journal of Paleontology 82 3, 470-491
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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