Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Triplesia
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Strophomenata
Order:
Orthotetida
Suborder:
Triplesiidina
Superfamily:
Triplesioidea
Family:
Triplesiidae
Formal Genus Name and Reference:
Triplesia HALL, 1859b, p. 44
Type Species:
Atrypa extans Emmons, 1842, p. 395, SD Hall & CLARKE, 1892, p. 270
Images
(Click to enlarge in a new window)
Fig. 494, 1 a-e .* T. extans (Emmons), Caradoc, Trenton, New York, ventral, dorsal, posterior, anterior, lateral views of complete shell, x1.5 (Wright, 1965b), Fig. 494, 1f, g. T. sp., Ashgill, Norway, anterolateral, posterodorsal views of silicified hinge regions, times_8 (new)
Synonyms
Triplecia, Dicraniscus
Geographic Distribution
widespread in North America, Eurasia, Morocco
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (upper Llanvirn)
Beginning International Stage:
Darriwilian
Fraction Up In Beginning Stage:
30
Beginning Date:
466.05
Ending Stage in Treatise Usage:
lower Silurian (upper Llandovery)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
100
Ending Date:
432.93
Description
Strongly trilobate with pronounced dorsal fold and ventral sulcus, surface smooth, with only faint growth lines, cardinal process keeled, cowl present
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Strophomenata
Order:
Orthotetida
Suborder:
Triplesiidina
Superfamily:
Triplesioidea
Family:
Triplesiidae
Formal Genus Name and Reference:
Triplesia HALL, 1859b, p. 44
Type Species:
Atrypa extans Emmons, 1842, p. 395, SD Hall & CLARKE, 1892, p. 270
Images
(Click to enlarge in a new window)
Fig. 494, 1 a-e .* T. extans (Emmons), Caradoc, Trenton, New York, ventral, dorsal, posterior, anterior, lateral views of complete shell, x1.5 (Wright, 1965b), Fig. 494, 1f, g. T. sp., Ashgill, Norway, anterolateral, posterodorsal views of silicified hinge regions, times_8 (new)
Synonyms
Triplecia, Dicraniscus
Geographic Distribution
widespread in North America, Eurasia, Morocco
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (upper Llanvirn)
Beginning International Stage:
Darriwilian
Fraction Up In Beginning Stage:
30
Beginning Date:
466.05
Ending Stage in Treatise Usage:
lower Silurian (upper Llandovery)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
100
Ending Date:
432.93
Description
Strongly trilobate with pronounced dorsal fold and ventral sulcus, surface smooth, with only faint growth lines, cardinal process keeled, cowl present