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Thecia
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Tabulata
Order:
Sarcinulida
Family:
Theciidae
Formal Genus Name and Reference:
Thecia Milne-Edwards & HAIME, 1849b, p. 263
Type Species:
Porites expatiatus LONSDALE, 1839, p. 687, M, + 6572$ and PF4624-4626, GSM, London
Images
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Synonyms
Romingerella
Geographic Distribution
Eu.-Asia-N.Am.
Age Range
Beginning Stage in Treatise Usage:
L.Sil.
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
USil.
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Corallum encrusting or tabular with hummocky or lobate upper surface or branching, cerioid or in places astreoid or thamnasterioid, in early stages and in axial parts of lobes and branches corallites prismatic or with one or more curved sides and moderately thin walls of fibers normal to a wide median dense plane and with but rare traces of septa, in distal parts where corallites are directed perpendicular to the calical surface, septa are commonly 12 and long and greatly thickened and each is a plate consisting of a longitudinal raw of monacanths contiguous except at axial edge; neighboring thickened septa commonly contiguous in wide peripheral stereozane in which a second order of septa rna y be developed; in these thickened parts the median dense plane of the common wall is indistinguishable, but a few longitudinal monacanths may be found in its place; these are not so numerous as to constitute a coenenchyme; pores are present and may have diaphragms as in favositids; mural pores interseptal; in thickened parts pore-tunnels pass from one tabularium to the next; tabulae thin, complete.
References
Museum or Author Information
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Tabulata
Order:
Sarcinulida
Family:
Theciidae
Formal Genus Name and Reference:
Thecia Milne-Edwards & HAIME, 1849b, p. 263
Type Species:
Porites expatiatus LONSDALE, 1839, p. 687, M, + 6572$ and PF4624-4626, GSM, London
Images
(Click to enlarge in a new window)Synonyms
Romingerella
Geographic Distribution
Eu.-Asia-N.Am.
Age Range
Beginning Stage in Treatise Usage:
L.Sil.
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
USil.
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Corallum encrusting or tabular with hummocky or lobate upper surface or branching, cerioid or in places astreoid or thamnasterioid, in early stages and in axial parts of lobes and branches corallites prismatic or with one or more curved sides and moderately thin walls of fibers normal to a wide median dense plane and with but rare traces of septa, in distal parts where corallites are directed perpendicular to the calical surface, septa are commonly 12 and long and greatly thickened and each is a plate consisting of a longitudinal raw of monacanths contiguous except at axial edge; neighboring thickened septa commonly contiguous in wide peripheral stereozane in which a second order of septa rna y be developed; in these thickened parts the median dense plane of the common wall is indistinguishable, but a few longitudinal monacanths may be found in its place; these are not so numerous as to constitute a coenenchyme; pores are present and may have diaphragms as in favositids; mural pores interseptal; in thickened parts pore-tunnels pass from one tabularium to the next; tabulae thin, complete.