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Krithe
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Cytherideidae
Subfamily:
Krithinae
Formal Genus Name and Reference:
Krithe Brady, Crosskey & ROBERTSON, 1874
Type Species:
Cythere (Cytherideis) bartonensis Jones, 1857, SD Brady & NORMAN, 1889
Images
(Click to enlarge in a new window)
Fig. 212,1a-d. K. papillosa (BoSQUET), Mio., Fr.(Aquitaine); 1a,b, male RV int., female LV int., X 75; 1c,d, male and female carapace dors., X 75 (42). -- Fig. 2l2,1e-g. *K. bartonensis (JONES), 1e,f, male and female LV lat.; 1g, carapace dors. (Quat., Br. I.), X60 (14). -- Fig. 212,1Il,i. ·K. bartonensis (JONES), male and female LV lat. (Belg., Barton.), X75 (42)
Synonyms
Ilyobates
Geographic Distribution
Eu.-N.Am.-Asia.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Carapace oblong, with greatest height at or behind mid-length, anterior end rounded, posterior obliquely truncate and usually inturned, though not in type species; moderately to strongly tumid in dorsal view; surface smooth, but bearing widely spaced large normal canals. LV hinge with longitudinal furrow for reception of sharp dorsal edge of RV (hinge reversed in original description, based partially on another species); muscle scars in vertical row of 4 adductors, with usually aU-shaped antennal scar in front but this may be divided into 2 or more scars; mandibular scars usually 2 small spots in front of lower part of row. Dimorphism pronounced, females being shurter and plumper than males (68,38, 14).
References
, Crosskey, H. W., \& Robertson, David REFERENCES, 1874, A monograph of the Post-Tertiary Entomostraca of Scotland including species from England and Ireland: Paleontogr. Soc., Mon., p. i-v, 1-274, pl. 1-16 (London).
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Cytherideidae
Subfamily:
Krithinae
Formal Genus Name and Reference:
Krithe Brady, Crosskey & ROBERTSON, 1874
Type Species:
Cythere (Cytherideis) bartonensis Jones, 1857, SD Brady & NORMAN, 1889
Images
(Click to enlarge in a new window)
Fig. 212,1a-d. K. papillosa (BoSQUET), Mio., Fr.(Aquitaine); 1a,b, male RV int., female LV int., X 75; 1c,d, male and female carapace dors., X 75 (42). -- Fig. 2l2,1e-g. *K. bartonensis (JONES), 1e,f, male and female LV lat.; 1g, carapace dors. (Quat., Br. I.), X60 (14). -- Fig. 212,1Il,i. ·K. bartonensis (JONES), male and female LV lat. (Belg., Barton.), X75 (42)
Synonyms
Ilyobates
Geographic Distribution
Eu.-N.Am.-Asia.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Carapace oblong, with greatest height at or behind mid-length, anterior end rounded, posterior obliquely truncate and usually inturned, though not in type species; moderately to strongly tumid in dorsal view; surface smooth, but bearing widely spaced large normal canals. LV hinge with longitudinal furrow for reception of sharp dorsal edge of RV (hinge reversed in original description, based partially on another species); muscle scars in vertical row of 4 adductors, with usually aU-shaped antennal scar in front but this may be divided into 2 or more scars; mandibular scars usually 2 small spots in front of lower part of row. Dimorphism pronounced, females being shurter and plumper than males (68,38, 14).
References
, Crosskey, H. W., \& Robertson, David REFERENCES, 1874, A monograph of the Post-Tertiary Entomostraca of Scotland including species from England and Ireland: Paleontogr. Soc., Mon., p. i-v, 1-274, pl. 1-16 (London).