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Keratestheria
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Branchiopoda
Subclass:
Diplostraca
Order:
Conchostraca
Suborder:
Spinicaudata
Superfamily:
Vertexioidea
Family:
Ipsiloniidae
Formal Genus Name and Reference:
Keratestheria CHERNYSHEV, 1948
Type Species:
*K. rugosa, OD
Images
(Click to enlarge in a new window)
Fig. 60,2. *K. rugosa, Chitinskaya Oblast (E. of Lake Baikal), right valve, ×4 (161)
Synonyms
Geographic Distribution
USSR(Sib.), Chitinskaya Oblast (E. of Lake Baikal)
Age Range
Beginning Stage in Treatise Usage:
M.Jur.
Beginning International Stage:
Aalenian
Fraction Up In Beginning Stage:
0
Beginning Date:
174.7
Ending Stage in Treatise Usage:
M.Jur.
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Slight incurvature anteriorly below dorsal margin, incurvature of last few growth lines posteriorly forming spine-type projections above dorsal margin with apex directed away from umbonal area
References
Zemp, Franz, Chernyshev, B. I., 1948 Zemp, Franz, Mitchell, G. F., 1957 Zemp, Franz, Mitchell, J., 1927 Zemp, Franz, Novozhilov, Nestor, 1955 Zemp, Franz, -, \& Varentsov, Ig., 1956 Zemp, Franz, Ozawa, Y., \& Watanabe, T., 1923 Zemp, Franz, Schultze, Paul, 1925 Zemp, Franz, Smirnov, S. S., 1940 Zemp, Franz, Størmer, Leif, 1944 Zemp, Franz, Tasch, Paul, n (a), after Ruedemann; (b), from syntype? MCZ (Harvard) 6292; (c), after photograph by A. R. Palmer \author{Lang, Karl} Zemp, Franz, 1948, Copepoda "Notodelphyoida" from the Swedish west coast with an outline on the systematics of the copepods: Arkiv Zoologi Uppsala, v. 40A, no. 14, p. 1-36.
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Branchiopoda
Subclass:
Diplostraca
Order:
Conchostraca
Suborder:
Spinicaudata
Superfamily:
Vertexioidea
Family:
Ipsiloniidae
Formal Genus Name and Reference:
Keratestheria CHERNYSHEV, 1948
Type Species:
*K. rugosa, OD
Images
(Click to enlarge in a new window)
Fig. 60,2. *K. rugosa, Chitinskaya Oblast (E. of Lake Baikal), right valve, ×4 (161)
Synonyms
Geographic Distribution
USSR(Sib.), Chitinskaya Oblast (E. of Lake Baikal)
Age Range
Beginning Stage in Treatise Usage:
M.Jur.
Beginning International Stage:
Aalenian
Fraction Up In Beginning Stage:
0
Beginning Date:
174.7
Ending Stage in Treatise Usage:
M.Jur.
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Slight incurvature anteriorly below dorsal margin, incurvature of last few growth lines posteriorly forming spine-type projections above dorsal margin with apex directed away from umbonal area
References
Zemp, Franz, Chernyshev, B. I., 1948 Zemp, Franz, Mitchell, G. F., 1957 Zemp, Franz, Mitchell, J., 1927 Zemp, Franz, Novozhilov, Nestor, 1955 Zemp, Franz, -, \& Varentsov, Ig., 1956 Zemp, Franz, Ozawa, Y., \& Watanabe, T., 1923 Zemp, Franz, Schultze, Paul, 1925 Zemp, Franz, Smirnov, S. S., 1940 Zemp, Franz, Størmer, Leif, 1944 Zemp, Franz, Tasch, Paul, n (a), after Ruedemann; (b), from syntype? MCZ (Harvard) 6292; (c), after photograph by A. R. Palmer \author{Lang, Karl} Zemp, Franz, 1948, Copepoda "Notodelphyoida" from the Swedish west coast with an outline on the systematics of the copepods: Arkiv Zoologi Uppsala, v. 40A, no. 14, p. 1-36.