Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Clarkiella hemispherica

Echinoidea - Cassiduloida

Taxonomy
Cassidulus hemisphericus was named by Slocum (1909). It is a 3D body fossil. Its type locality is Patterson Farm, Pontotoc, which is in a Maastrichtian carbonate chalk in the Prairie Bluff Chalk Formation of Mississippi.

It was recombined as Cossmannaster hemisphaericus by Sanchez Roig (1926); it was recombined as Clarkiella hemispherica by Cooke (1953); it was recombined as Hardouinia hemispherica by Kier (1962).

Synonyms
Synonymy list
YearName and author
1909Cassidulus hemisphericus Slocum pp. 7-8 figs. pl. 1, figs. 7, 9
1915Cassidulus conoideus Clark
1915Cassidulus conoideus Clark and Twitchell p. 80 figs. Plate XXVII, Figs. 3a-d
1915Cassidulus hemisphericus Clark and Twitchell p. 80
1926Cossmannaster hemisphaericus Sanchez Roig p. 73
1953Clarkiella hemispherica Cooke p. 18 figs. Pl 5, figs 15-18
1962Hardouinia hemispherica Kier p. 150

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
Echinozoa()
classEchinoidea()
RankNameAuthor
subclassEuechinoideaBronn 1860
superorderAcroechinoidea()
Carinacea
Irregularia()
Microstomata
Neognathostomata
orderCassiduloida
genusClarkiella()
specieshemispherica(Slocum 1909)

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Clarkiella hemispherica Slocum 1909
show all | hide all
Invalid names: Cassidulus conoideus Clark and Twitchell 1915 [synonym]
Diagnosis
No diagnoses are available