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Porocidaris
Classification
Phylum:
Echinodermata
Subphylum:
Echinozoa (sea urchins, holothurians, etc.)
Class:
Echinoidea
Subclass:
Perischoechinoida
Order:
Cidaroida
Family:
Cidaridae
Subfamily:
Rhabdocidarinae
Formal Genus Name and Reference:
Porocidaris DESOR, 1855, p. 46
Type Species:
Cidarites schmidelii Münster, 1843, SD Lambert & THIÉRY, 1910, p. 108
Images
(Click to enlarge in a new window)
Fig. 244,2. *P. schmidelii (Münster), Egypt, 2a, base of spine, X2.8 (27e), 2b, test, lat., X1.1, 2c-e, spines, X1.1(44), 2f, interamb plate, X2.1, 2g, amb plates, X8.5 (121).
Synonyms
Procidaris
Geographic Distribution
Eu.-N.Afr.
Age Range
Beginning Stage in Treatise Usage:
Eoc.
Beginning International Stage:
Ypresian
Fraction Up In Beginning Stage:
0
Beginning Date:
56
Ending Stage in Treatise Usage:
Eoc.
Ending International Stage:
Priabonian
Fraction Up In Ending Stage:
100
Ending Date:
33.9
Description
Like Rhabdocidaris but ambulacra straight. Areoles circular and shallow (as in Rhabdocidaris) but confluent, each with circle of radiating, porelike or slitlike marginal depressions. Primary spines partly known only, orals flattened, coarsely serrate, collar more or less tuberculate.
References
Desor, Edouard, 1855-58, Synopsis des échinides fossiles: 490 p., 44 pl., Ch. Reinwald (Paris), Kriedel \& Niedner (Wiesbaden).
Museum or Author Information
Classification
Phylum:
Echinodermata
Subphylum:
Echinozoa (sea urchins, holothurians, etc.)
Class:
Echinoidea
Subclass:
Perischoechinoida
Order:
Cidaroida
Family:
Cidaridae
Subfamily:
Rhabdocidarinae
Formal Genus Name and Reference:
Porocidaris DESOR, 1855, p. 46
Type Species:
Cidarites schmidelii Münster, 1843, SD Lambert & THIÉRY, 1910, p. 108
Images
(Click to enlarge in a new window)
Fig. 244,2. *P. schmidelii (Münster), Egypt, 2a, base of spine, X2.8 (27e), 2b, test, lat., X1.1, 2c-e, spines, X1.1(44), 2f, interamb plate, X2.1, 2g, amb plates, X8.5 (121).
Synonyms
Procidaris
Geographic Distribution
Eu.-N.Afr.
Age Range
Beginning Stage in Treatise Usage:
Eoc.
Beginning International Stage:
Ypresian
Fraction Up In Beginning Stage:
0
Beginning Date:
56
Ending Stage in Treatise Usage:
Eoc.
Ending International Stage:
Priabonian
Fraction Up In Ending Stage:
100
Ending Date:
33.9
Description
Like Rhabdocidaris but ambulacra straight. Areoles circular and shallow (as in Rhabdocidaris) but confluent, each with circle of radiating, porelike or slitlike marginal depressions. Primary spines partly known only, orals flattened, coarsely serrate, collar more or less tuberculate.
References
Desor, Edouard, 1855-58, Synopsis des échinides fossiles: 490 p., 44 pl., Ch. Reinwald (Paris), Kriedel \& Niedner (Wiesbaden).