30376 - Positive/Negative 0.43 Inch Geragnostus occitanus Lower Ordovician Trilobite - France
30376 - Positive/Negative 0.43 Inch Geragnostus occitanus Lower Ordovician Trilobite - France 30376 - Positive/Negative 0.43 Inch Geragnostus occitanus Lower Ordovician Trilobite - France 30376 - Positive/Negative 0.43 Inch Geragnostus occitanus Lower Ordovician Trilobite - France 30376 - Positive/Negative 0.43 Inch Geragnostus occitanus Lower Ordovician Trilobite - France 30376 - Positive/Negative 0.43 Inch Geragnostus occitanus Lower Ordovician Trilobite - France 30376 - Positive/Negative 0.43 Inch Geragnostus occitanus Lower Ordovician Trilobite - France 30376 - Positive/Negative 0.43 Inch Geragnostus occitanus Lower Ordovician Trilobite - France 30376 - Positive/Negative 0.43 Inch Geragnostus occitanus Lower Ordovician Trilobite - France

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30376 - Positive/Negative 0.43 Inch Geragnostus occitanus Lower Ordovician Trilobite - France

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Species
† Geragnostus occitanus (Howell, 1935)
Age
Lower Ordovician,Arenig Series (~480 Million Years)
Location
Le Foulon, Herault (Francia)
Formation
Le Foulon Lower Ordovician Outcrops
Size
10.9 mm   •    in
Weight
105 g   •    oz
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Description
Geragnostus, Howell 1935 (trilobite)
Trilobita - Agnostida - Metagnostidae
 
PaleoDB taxon number: 19228

Synonym: Neptunagnostella Pek 1977 (taxon 155650)

Parent taxon: Metagnostidae according to O. A. Hoel 1999

See also Harrington and Leanza 1957, Jell and Adrain 2002, Neuman 1964, Robison and Pantoja-Alor 1968, Sepkoski 2002 and Whittington et al. 1997

Sister taxa: Anglagnostus, Arthrorhachis, Corrugatagnostus, Dividuagnostus, Galbagnostus, Geragnostella, Homagnostoides, Quadragnostus, Trinodus

Subtaxa: Geragnostus (Geragnostella), Geragnostus (Geragnostus), Geragnostus (Microagnostus), Geragnostus (Novoagnostus), Geragnostus clusus, Geragnostus fabius, Geragnostus longicollis

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Ecology: slow-moving epifaunal detritivore

Environments: marine (23 collections), offshore (16), carbonate (14), deep subtidal shelf (13), offshore shelf (10), slope (8), lagoonal (4), shallow subtidal (4), open shallow subtidal (3), coastal (2), transition zone/lower shoreface (2), peritidal (2), (1), deep subtidal (1), submarine fan (1), deep-water (1), deep subtidal ramp (1), basinal (siliceous) (1), shoreface (1)

Age range: 488.3 to 445.6 Ma

Distribution:

• Ordovician of Argentina (42 collections), Australia (2), Canada (6: Newfoundland, Newfoundland and Labrador, Northwest Territories, Yukon and Northwest Terrorities), China (38), Colombia (1), the Czech Republic (2), Estonia (2), France (6), Iran (1), Ireland (1), Mexico (1), Morocco (1), Norway (4), Portugal (1), the Russian Federation (3), Spain (5), Sweden (10), the United Kingdom (5), United States (19: Maine, Montana, Nevada, New Mexico, Texas, Vermont)

• Llandeilo of China (3)

• Whiterockian of Canada (10: Newfoundland and Labrador)

• Dawan of China (1)

• Klabava of the Czech Republic (2)

• Arenig of Bolivia (1), Canada (2: Newfoundland and Labrador), China (11), France (2), Sweden (4), the United Kingdom (1)

• Arenigian of China (4), France (2)

• Cambrian of Australia (1), China (5), United States (7: Alaska, Montana, Nevada, New Mexico, Wyoming)
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