Welcome to the Crustaceans subsite on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Ellipsograpta
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Branchiopoda
Subclass:
Diplostraca
Order:
Conchostraca
Suborder:
Spinicaudata
Superfamily:
Cyzicoidea
Family:
Asmussiidae
Subfamily:
Asmussiinae
Formal Genus Name and Reference:
Ellipsograpta CHANG, 1957
Type Species:
*E. elliptica, OD
Images
(Click to enlarge in a new window)
Fig. 52,3. *E. elliptica, Nenkiang Sh., left valve, ×10 (23)
Synonyms
Geographic Distribution
China(NW.Heilungkiang)
Age Range
Beginning Stage in Treatise Usage:
M.Cret., U.Cret.
Beginning International Stage:
Barremian
Fraction Up In Beginning Stage:
0
Beginning Date:
126.5
Ending Stage in Treatise Usage:
M.Cret., U.Cret.
Ending International Stage:
Turonian
Fraction Up In Ending Stage:
100
Ending Date:
89.39
Description
Carapace elliptical, dorsal margin straight, both anterior and posterior margins well rounded, umbo subcentral, ornament of hachure-type or of small radially aligned tubercles
References
Chang, W. T., 1957, Some Cretaceous conchostracans from Tsaidam Basin: Acta Palaeont. Sinica, v. 5, no. 4, p. 507-54, pl. 1-2.
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Branchiopoda
Subclass:
Diplostraca
Order:
Conchostraca
Suborder:
Spinicaudata
Superfamily:
Cyzicoidea
Family:
Asmussiidae
Subfamily:
Asmussiinae
Formal Genus Name and Reference:
Ellipsograpta CHANG, 1957
Type Species:
*E. elliptica, OD
Images
(Click to enlarge in a new window)
Fig. 52,3. *E. elliptica, Nenkiang Sh., left valve, ×10 (23)
Synonyms
Geographic Distribution
China(NW.Heilungkiang)
Age Range
Beginning Stage in Treatise Usage:
M.Cret., U.Cret.
Beginning International Stage:
Barremian
Fraction Up In Beginning Stage:
0
Beginning Date:
126.5
Ending Stage in Treatise Usage:
M.Cret., U.Cret.
Ending International Stage:
Turonian
Fraction Up In Ending Stage:
100
Ending Date:
89.39
Description
Carapace elliptical, dorsal margin straight, both anterior and posterior margins well rounded, umbo subcentral, ornament of hachure-type or of small radially aligned tubercles
References
Chang, W. T., 1957, Some Cretaceous conchostracans from Tsaidam Basin: Acta Palaeont. Sinica, v. 5, no. 4, p. 507-54, pl. 1-2.