Welcome to the Radiolaria subsite on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Acanthocircus
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Actinopoda
Subclass:
Radiolaria
Order:
Osculosida
Suborder:
Nassellina
Infraorder:
Plectellari (division)
Superfamily:
Stephaniicae
Family:
Stephaniidae
Subfamily:
Lithocircinae
Formal Genus Name and Reference:
Acanthocircus SOUIN., 1903
Type Species:
A. irregularis, SD herein
Images
(Click to enlarge in a new window)
Fig. 51,9. *A. irregularis, Cret., Italy, X60 (52)
Synonyms
Geographic Distribution
Age Range
Beginning Stage in Treatise Usage:
Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Ring mostly elliptical, incomplete internal spine on each side of middle, thorns or spines simple
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Actinopoda
Subclass:
Radiolaria
Order:
Osculosida
Suborder:
Nassellina
Infraorder:
Plectellari (division)
Superfamily:
Stephaniicae
Family:
Stephaniidae
Subfamily:
Lithocircinae
Formal Genus Name and Reference:
Acanthocircus SOUIN., 1903
Type Species:
A. irregularis, SD herein
Images
(Click to enlarge in a new window)
Fig. 51,9. *A. irregularis, Cret., Italy, X60 (52)
Synonyms
Geographic Distribution
Age Range
Beginning Stage in Treatise Usage:
Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Ring mostly elliptical, incomplete internal spine on each side of middle, thorns or spines simple