Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Longispina
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Chonetidae
Formal Genus Name and Reference:
Longispina COOPER, 1942, p. 230
Type Species:
Chonetes emmetensis WINCHELL, 1866, p. 92, OD
Images
(Click to enlarge in a new window)
Fig. 260, 5a-d. *L. emmetensis (Winchell), Middle Devonian, Hamilton Group, New York, USA, ventral valve internal mold, ventral valve exterior, articulated shell in dorsal view, dorsal valve interior, $\\times_{3}$ (Cooper, 1942).
Synonyms
Geographic Distribution
North America (Appalachian Mountains), Venezuela, Bolivia, Morocco, Algeria, Spain, France
Age Range
Beginning Stage in Treatise Usage:
Middle Devonian (Eifelian)
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
Upper Devonian (Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Shell small, usually strongly concavoconvex, anterior margin regularly rounded, small umbo prominent, often strongly curved posteriorly, ventral interarea concave, anacline, dorsal interarea more or less concave, hypercline, pseudodeltidium long, narrow, chilidium small, radial ornamentation costellate to costate, few strong growth lines usually present, spines orthomorph parallel to hinge line, symmetrically arranged, ventral interior with short, stout median septum, hinge teeth relatively small, anteriorly rounded, dorsal interior with variably developed median septum supporting long, narrow cardinal process, myophore long, narrow, dorsally directed, inner socket ridges low, short, anderidia small, anteriorly divergent at 50° to 70°, pair of variably developed accessory septa in anterior part of valve, anteriorly divergent at 20° to 30°
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Chonetidae
Formal Genus Name and Reference:
Longispina COOPER, 1942, p. 230
Type Species:
Chonetes emmetensis WINCHELL, 1866, p. 92, OD
Images
(Click to enlarge in a new window)
Fig. 260, 5a-d. *L. emmetensis (Winchell), Middle Devonian, Hamilton Group, New York, USA, ventral valve internal mold, ventral valve exterior, articulated shell in dorsal view, dorsal valve interior, $\\times_{3}$ (Cooper, 1942).
Synonyms
Geographic Distribution
North America (Appalachian Mountains), Venezuela, Bolivia, Morocco, Algeria, Spain, France
Age Range
Beginning Stage in Treatise Usage:
Middle Devonian (Eifelian)
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
Upper Devonian (Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Shell small, usually strongly concavoconvex, anterior margin regularly rounded, small umbo prominent, often strongly curved posteriorly, ventral interarea concave, anacline, dorsal interarea more or less concave, hypercline, pseudodeltidium long, narrow, chilidium small, radial ornamentation costellate to costate, few strong growth lines usually present, spines orthomorph parallel to hinge line, symmetrically arranged, ventral interior with short, stout median septum, hinge teeth relatively small, anteriorly rounded, dorsal interior with variably developed median septum supporting long, narrow cardinal process, myophore long, narrow, dorsally directed, inner socket ridges low, short, anderidia small, anteriorly divergent at 50° to 70°, pair of variably developed accessory septa in anterior part of valve, anteriorly divergent at 20° to 30°