Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Rotula
Classification
Phylum:
Echinodermata
Subphylum:
Echinozoa (sea urchins, holothurians, etc.)
Class:
Echinoidea
Subclass:
Euechinoidea (sea urchins) - Superorder Neognathostomata (sand dollars)
Order:
Clypeasteroida (sand dollars)
Suborder:
Rotulina
Family:
Rotulidae
Formal Genus Name and Reference:
Rotula SCHUMACHER, 1817, p. 33, 84
Type Species:
*R. miltiloba (=Echinodiscus octiesdigitatus Leske, 1778, p. 211, =Echinus orbiculus var. β Linné, 1758, p. 666, =Rotula augusti auctt.), SD DESOR, 1858, p. 238
Images
(Click to enlarge in a new window)
Fig. 377,5. *R. octiesdigitatus (Leske), Rec., 5a-c, aboral, oral, plate of oral surface (interamb. stippled), ×0.6 (6,51)
Synonyms
Echinotrochus
Geographic Distribution
W.Afr.
Age Range
Beginning Stage in Treatise Usage:
Mio.
Beginning International Stage:
Aquitanian
Fraction Up In Beginning Stage:
0
Beginning Date:
23.04
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test unequally digitate posteriorly, with paired anterior interambulacral lunules, pore pairs conjugate, outer pore elongate and subdivided, periproct oral, between 1st pair of coronal plates, paired interambulacra usually discontinuous
References
Museum or Author Information
Classification
Phylum:
Echinodermata
Subphylum:
Echinozoa (sea urchins, holothurians, etc.)
Class:
Echinoidea
Subclass:
Euechinoidea (sea urchins) - Superorder Neognathostomata (sand dollars)
Order:
Clypeasteroida (sand dollars)
Suborder:
Rotulina
Family:
Rotulidae
Formal Genus Name and Reference:
Rotula SCHUMACHER, 1817, p. 33, 84
Type Species:
*R. miltiloba (=Echinodiscus octiesdigitatus Leske, 1778, p. 211, =Echinus orbiculus var. β Linné, 1758, p. 666, =Rotula augusti auctt.), SD DESOR, 1858, p. 238
Images
(Click to enlarge in a new window)
Fig. 377,5. *R. octiesdigitatus (Leske), Rec., 5a-c, aboral, oral, plate of oral surface (interamb. stippled), ×0.6 (6,51)
Synonyms
Echinotrochus
Geographic Distribution
W.Afr.
Age Range
Beginning Stage in Treatise Usage:
Mio.
Beginning International Stage:
Aquitanian
Fraction Up In Beginning Stage:
0
Beginning Date:
23.04
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test unequally digitate posteriorly, with paired anterior interambulacral lunules, pore pairs conjugate, outer pore elongate and subdivided, periproct oral, between 1st pair of coronal plates, paired interambulacra usually discontinuous