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Lytvolasma
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Stereolasmatina
Family:
Actinophrentidae
Subfamily:
Actinophrentinae
Formal Genus Name and Reference:
Lytvolasma SOSHKINA, 1925
Type Species:
L. asymmetrieum; M; t803, coli. 146, PIN, Moscow
Images
(Click to enlarge in a new window)
Fig. 203,1a-c. *L. asymmetricum, holotype, R. Lytva,
6 km. below Alexandrovskiy works; a-c, serial transv. sees., X4 (Soshkina, Dobrolyubova, & Porfirev, 1941).
Synonyms
Bradyphyllum, Lytvelasma
Geographic Distribution
Eu.(C.Urals)
Age Range
Beginning Stage in Treatise Usage:
L.Perm.(Artinsk)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
0
Beginning Date:
290.51
Ending Stage in Treatise Usage:
L.Perm.(Artinsk)
Ending International Stage:
Artinskian
Fraction Up In Ending Stage:
100
Ending Date:
283.3
Description
Solitary, small; major septa thickened, laterally contiguous over much of their length, long, somewhat curved and almost reaching axis, in cardinal quadrants grouped about open fossula that narrows midlength, then widens into axial space around which axial ends of septa of counterquadrants join; minor septa very short, confined to narrow peripheral stereozone; tabulae convex, few.
References
Museum or Author Information
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Stereolasmatina
Family:
Actinophrentidae
Subfamily:
Actinophrentinae
Formal Genus Name and Reference:
Lytvolasma SOSHKINA, 1925
Type Species:
L. asymmetrieum; M; t803, coli. 146, PIN, Moscow
Images
(Click to enlarge in a new window)
Fig. 203,1a-c. *L. asymmetricum, holotype, R. Lytva,
6 km. below Alexandrovskiy works; a-c, serial transv. sees., X4 (Soshkina, Dobrolyubova, & Porfirev, 1941).
Synonyms
Bradyphyllum, Lytvelasma
Geographic Distribution
Eu.(C.Urals)
Age Range
Beginning Stage in Treatise Usage:
L.Perm.(Artinsk)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
0
Beginning Date:
290.51
Ending Stage in Treatise Usage:
L.Perm.(Artinsk)
Ending International Stage:
Artinskian
Fraction Up In Ending Stage:
100
Ending Date:
283.3
Description
Solitary, small; major septa thickened, laterally contiguous over much of their length, long, somewhat curved and almost reaching axis, in cardinal quadrants grouped about open fossula that narrows midlength, then widens into axial space around which axial ends of septa of counterquadrants join; minor septa very short, confined to narrow peripheral stereozone; tabulae convex, few.