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Fort Ann, USA

FormationFort Ann
Age:485 - 479 Ma
Paleozoic
IntervalStairsian
Tectonic SettingPassive margin
Lithologylimestone, "limestone"/dolomite
Number of Collections4
Number of Occurrences35

Recorded Sample Locations

LocationRegionStratigraphic Name
Champlain ValleyEssex County, New York, USAFort Ann
Division B BedsAddison County, Vermont, USAFort Ann
Division D BedsAddison County, Vermont, USAFort Ann
Division E BedsAddison County, Vermont, USAFort Ann

Associated Units

Stratigraphic NameAgeLithologyOccurrence Records
Fort Cassin - Sciota485 - 470 Ma
Paleozoic
limestone10
Great Meadows - Skene485 - 478 Ma
Paleozoic
dolomite12
Great Meadows - Smith Basin485 - 479 Ma
Paleozoic
limestone39

Recorded Fossils

Accepted NameHierarchyAge
Hystricurus conicus
species
7Animalia : Arthropoda : Trilobita : Aulacopleurida : Hystricuridae : Hystricurus : Hystricurus conicus485.4 - 478.6 Ma
Paleozoic
Bolbocephalus seelyi
species
7Animalia : Arthropoda : Trilobita : Proetida : Bathyuridae : Bolbocephalus : Bolbocephalus seelyi485.4 - 478.6 Ma
Paleozoic
Finkelnburgia macleodi
species
7Animalia : Brachiopoda : Rhynchonellata : Orthida : Finkelnburgiidae : Finkelnburgia : Finkelnburgia macleodi485.4 - 478.6 Ma
Paleozoic
Diaphelasma sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Clarkellidae : Diaphelasma485.4 - 478.6 Ma
Paleozoic
Crinoidea
class
3Animalia : Echinodermata : Crinoidea485.4 - 478.6 Ma
Paleozoic
Bassleroceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Bassleroceratidae : Bassleroceras485.4 - 478.6 Ma
Paleozoic
Bassleroceras kirbyi
species
7Animalia : Mollusca : Cephalopoda : Ellesmerocerida : Ellesmeroceratidae : Bassleroceras : Bassleroceras kirbyi485.4 - 478.6 Ma
Paleozoic
Endoceras primigenium
species
7Animalia : Mollusca : Cephalopoda : Endocerida : Endoceratidae : Endoceras : Endoceras primigenium485.4 - 478.6 Ma
Paleozoic
Clitendoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Clitendoceras485.4 - 478.6 Ma
Paleozoic
Proendoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Proendoceras485.4 - 478.6 Ma
Paleozoic
Aphetoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Estonioceratidae : Aphetoceras485.4 - 478.6 Ma
Paleozoic
Campbelloceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Tarphyceratidae : Campbelloceras485.4 - 478.6 Ma
Paleozoic
Seelyoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Tarphyceratidae : Seelyoceras485.4 - 478.6 Ma
Paleozoic
Bucania tripla
species
7Animalia : Mollusca : Bucanellidae : Bucanella : Bucania tripla485.4 - 478.6 Ma
Paleozoic
Macluritella imperfecta
species
7Animalia : Mollusca : Gastropoda : Euomphalina : Macluritidae : Macluritella : Macluritella imperfecta485.4 - 478.6 Ma
Paleozoic
Ecculiomphalus priscus
species
7Animalia : Mollusca : Gastropoda : Euomphalidae : Ecculiomphalus : Ecculiomphalus priscus485.4 - 478.6 Ma
Paleozoic
Euomphalus calciferus
species
7Animalia : Mollusca : Gastropoda : Euomphalidae : Ecculiomphalus : Euomphalus calciferus485.4 - 478.6 Ma
Paleozoic
Ophileta compacta
species
7Animalia : Mollusca : Gastropoda : Ophiletidae : Lecanospira : Ophileta compacta485.4 - 478.6 Ma
Paleozoic
Ceratopea canadensis
species
7Animalia : Mollusca : Gastropoda : Euomphalina : Raphistomatidae : Ceratopea : Ceratopea canadensis485.4 - 478.6 Ma
Paleozoic
Plethospira bilineata
species
7Animalia : Mollusca : Gastropoda : Pleurotomariida : Murchisoniidae : Plethospira : Plethospira bilineata485.4 - 478.6 Ma
Paleozoic
Murchisonia confusa
species
7Animalia : Mollusca : Gastropoda : Pleurotomariida : Murchisoniidae : Murchisonia : Murchisonia confusa485.4 - 478.6 Ma
Paleozoic
Murchisonia gracilens
species
7Animalia : Mollusca : Gastropoda : Pleurotomariida : Murchisoniidae : Murchisonia : Murchisonia gracilens485.4 - 478.6 Ma
Paleozoic
Plethospira cassina
species
7Animalia : Mollusca : Gastropoda : Murchisoniina : Hormotomidae : Plethospira : Plethospira cassina485.4 - 478.6 Ma
Paleozoic
Pleurotomaria turgida
species
7Animalia : Mollusca : Gastropoda : Straparollinidae : Straparollina : Pleurotomaria turgida485.4 - 478.6 Ma
Paleozoic
Lophospira calcifera
species
7Animalia : Mollusca : Gastropoda : Lophospiridae : Lophospira : Lophospira calcifera485.4 - 478.6 Ma
Paleozoic
Pleurotomaria etna
species
7Animalia : Mollusca : Gastropoda : Sinuopeidae : Euconia : Pleurotomaria etna485.4 - 478.6 Ma
Paleozoic
Euconia sinuata
species
7Animalia : Mollusca : Gastropoda : Sinuopeidae : Euconia : Euconia sinuata485.4 - 478.6 Ma
Paleozoic
Trochonema exile
species
7Animalia : Mollusca : Gastropoda : Trochonematidae : Trochonema : Trochonema exile485.4 - 478.6 Ma
Paleozoic
Archinacella pileolum
species
7Animalia : Mollusca : Tergomya : Archinacellida : Archinacellidae : Archinacella : Archinacella pileolum485.4 - 478.6 Ma
Paleozoic
Kirengella alta
species
7Animalia : Mollusca : Tergomya : Tryblidiida : Kirengellidae : Kirengella : Kirengella alta485.4 - 478.6 Ma
Paleozoic
Proplina acutum
species
7Animalia : Mollusca : Tergomya : Tryblidiida : Tryblidiidae : Proplina : Proplina acutum485.4 - 478.6 Ma
Paleozoic

References

Whitfield R. P. Observations on some imperfectly known fossils from the Calciferous sandrock of Lake Champlain, and descriptions of several new forms, Bulletin of the American Museum of Natural History 2, 41-63
Flower R. H. (1968) Part II - Fossils from the Smith Basin Limestone of the Fort Ann Region New York, New Mexico Institute of Mining and Technology Memoir 22 1, 22-27
Mazzullo S. J., Friedman G. M. (1977) Competitive algal colonization of peritidal flats in a schizohaline environment; the lower Ordovician of New York, Journal of Sedimentary Petrology 47 1, 398-410 doi:10.1306/212f7185-2b24-11d7-8648000102c1865d
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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