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Caryocaris
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Malacostraca
Subclass:
Phyllocarida
Order:
Archaeostraca
Suborder:
Ceratiocarina
Family:
Ceratiocarididae
Formal Genus Name and Reference:
Caryocaris SALTER, 1863
Type Species:
*C. wrightii, OD
Images
(Click to enlarge in a new window)
Fig. 137,1. *C. wrightii, L. Ord., Eng. (Skiddaw, Cumberland), left lat., X1.5 (160).--FIG. 137,2. C. maeeoyi (ETHERIDGE) [=C. etlrvilala GURLEY], L.Ord., USA (N.Y., N. Granville); LV lat., XI.5 (Rolfe, n). -- Fig. 137,3. C. monodon (GURLEY), L.Ord., Can. (Que.); telson and furca, dors. (reconstr.), X3 (Rolfe, n).
Synonyms
Dawsonia, Caryocartls, ?Rhinopleroearis, Rhinoplerioearis, Lamproearis, Lamproearis
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
L.Ord. [U.Cam. records of this genus are based on generically indeterminable specimens]
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
U.Ord. [Sil. records of this genus are based on generically indeterminable specimens
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
100
Ending Date:
443.07
Description
Carapace elongate-subovate, posterior margin with (or ?without) fringe of spines and spinules, anterodorsal carapace horn of each valve may be anteriorly produced; midventral ridge may be present, subparallel to ventral margin but confluent with it antero- and posteroventrally; surface smooth, striate, or reticulate, telson and furca laterally expanded, leaflike, telson shorter than furca, external margins of furcal rami ?notched or serrate. [Rhinopteroearis may prove to be generically distinct, but the absence of posterior spinules and produced carapace horn from the type species and other species of Caryocaris may only be due to preservation. These structures are commonly not preserved in specimens of " Rhinopteroearis" and indeed were not noticed or figured by ETHERIDGE in his original description of the syntypes of the type species of Rllinopteroearis. Furthermore the significance of these characters at the generic level seems doubtful.] [U.Cam. and Sil. records of this genus are based on generically indeterminable specimens
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Malacostraca
Subclass:
Phyllocarida
Order:
Archaeostraca
Suborder:
Ceratiocarina
Family:
Ceratiocarididae
Formal Genus Name and Reference:
Caryocaris SALTER, 1863
Type Species:
*C. wrightii, OD
Images
(Click to enlarge in a new window)
Fig. 137,1. *C. wrightii, L. Ord., Eng. (Skiddaw, Cumberland), left lat., X1.5 (160).--FIG. 137,2. C. maeeoyi (ETHERIDGE) [=C. etlrvilala GURLEY], L.Ord., USA (N.Y., N. Granville); LV lat., XI.5 (Rolfe, n). -- Fig. 137,3. C. monodon (GURLEY), L.Ord., Can. (Que.); telson and furca, dors. (reconstr.), X3 (Rolfe, n).
Synonyms
Dawsonia, Caryocartls, ?Rhinopleroearis, Rhinoplerioearis, Lamproearis, Lamproearis
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
L.Ord. [U.Cam. records of this genus are based on generically indeterminable specimens]
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
U.Ord. [Sil. records of this genus are based on generically indeterminable specimens
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
100
Ending Date:
443.07
Description
Carapace elongate-subovate, posterior margin with (or ?without) fringe of spines and spinules, anterodorsal carapace horn of each valve may be anteriorly produced; midventral ridge may be present, subparallel to ventral margin but confluent with it antero- and posteroventrally; surface smooth, striate, or reticulate, telson and furca laterally expanded, leaflike, telson shorter than furca, external margins of furcal rami ?notched or serrate. [Rhinopteroearis may prove to be generically distinct, but the absence of posterior spinules and produced carapace horn from the type species and other species of Caryocaris may only be due to preservation. These structures are commonly not preserved in specimens of " Rhinopteroearis" and indeed were not noticed or figured by ETHERIDGE in his original description of the syntypes of the type species of Rllinopteroearis. Furthermore the significance of these characters at the generic level seems doubtful.] [U.Cam. and Sil. records of this genus are based on generically indeterminable specimens