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Sulcoretepora
Classification
Phylum:
Bryozoa
Subphylum:
Ectoprocta
Class:
Gymnolaemata
Order:
Cystoporata
Suborder:
Fistuliporina
Family:
Cystodictyonidae
Formal Genus Name and Reference:
Sulcoretepora D'ORBIGNY, 1849, p. 501
Type Species:
Flustra? parallela PHILLIPS, 1836, p. 200, OD, L. Carb., Yorkshire, Eng.
Images
(Click to enlarge in a new window)
Fig. 210, 1a-f. *S. parallela (Phillips), Carboniferous Ls., Scot., a, undulatory mesotheca, sharp zooecial bend, thin exozone, long. sec., HM D-113-2, x30, b, ovate autozooecia between range walls in exozone; tang. sec., HM D-113-4, X30; c, straplike zoarium with elevated range walls and lunaria; HMD-113, X3; d, autozooecia alternating across folded mesotheca, vesicles in outer endozone and inner exozone, stereom in exozone; transv. sec., HM D-113-3, X50; e, mesotheca (lower left), range wall with branched dark zones and tubules; transv. sec., HM D-113-2, X100.
Synonyms
Arcanopora; Acanthopora; Mstaina
Geographic Distribution
Eu., USSR
Age Range
Beginning Stage in Treatise Usage:
L.Carb.
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
L.Carb.
Ending International Stage:
Serpukhovian
Fraction Up In Ending Stage:
100
Ending Date:
323.4
Description
Zoarium narrow bifoliate ribbons, dichotomously branched in plane of mesotheca, elongate, rounded autozooecia in ranges, rhombically arranged on lateral sides of branch, lunaria elevated on proximolateral side of autozooecia, range walls elevated, monticules absent, branch margins narrow, noncelluliferous. Mesotheca with dark central layer and laminated outer layers, sharply folded in center, undulatory near branch margins. Autozooecia full width and rectangular to parallelogram-shaped in deep tangential section, contiguous, alternating across mesotheca. Compound range walls with dark median zone continuous into boundary zone in mesotheca, lateral zones laminated, branched dark zones and tubules in thickened range walls in exozone. Autozooecia subquadrate to subhemispherical in cross section at mesotheca, angular teardrop shaped in deep tangential section in mid exozone and partially isolated between range walls by small, blisterlike vesicles. Walls laminated with minute tubules. Lunaria laminated, indistinct. Vesicles adjacent to mesotheca only at noncelluliferous branch margins. Stereom laminated with tubules in exozone.
References
d'Orbigny, A. D., , 1849, Description de quelques genres nouveaux de Mollusques Bryozoaires: Rev. Mag. Zool., ser. 2, v. 1, p. 499-504.
Museum or Author Information
Classification
Phylum:
Bryozoa
Subphylum:
Ectoprocta
Class:
Gymnolaemata
Order:
Cystoporata
Suborder:
Fistuliporina
Family:
Cystodictyonidae
Formal Genus Name and Reference:
Sulcoretepora D'ORBIGNY, 1849, p. 501
Type Species:
Flustra? parallela PHILLIPS, 1836, p. 200, OD, L. Carb., Yorkshire, Eng.
Images
(Click to enlarge in a new window)
Fig. 210, 1a-f. *S. parallela (Phillips), Carboniferous Ls., Scot., a, undulatory mesotheca, sharp zooecial bend, thin exozone, long. sec., HM D-113-2, x30, b, ovate autozooecia between range walls in exozone; tang. sec., HM D-113-4, X30; c, straplike zoarium with elevated range walls and lunaria; HMD-113, X3; d, autozooecia alternating across folded mesotheca, vesicles in outer endozone and inner exozone, stereom in exozone; transv. sec., HM D-113-3, X50; e, mesotheca (lower left), range wall with branched dark zones and tubules; transv. sec., HM D-113-2, X100.
Synonyms
Arcanopora; Acanthopora; Mstaina
Geographic Distribution
Eu., USSR
Age Range
Beginning Stage in Treatise Usage:
L.Carb.
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
L.Carb.
Ending International Stage:
Serpukhovian
Fraction Up In Ending Stage:
100
Ending Date:
323.4
Description
Zoarium narrow bifoliate ribbons, dichotomously branched in plane of mesotheca, elongate, rounded autozooecia in ranges, rhombically arranged on lateral sides of branch, lunaria elevated on proximolateral side of autozooecia, range walls elevated, monticules absent, branch margins narrow, noncelluliferous. Mesotheca with dark central layer and laminated outer layers, sharply folded in center, undulatory near branch margins. Autozooecia full width and rectangular to parallelogram-shaped in deep tangential section, contiguous, alternating across mesotheca. Compound range walls with dark median zone continuous into boundary zone in mesotheca, lateral zones laminated, branched dark zones and tubules in thickened range walls in exozone. Autozooecia subquadrate to subhemispherical in cross section at mesotheca, angular teardrop shaped in deep tangential section in mid exozone and partially isolated between range walls by small, blisterlike vesicles. Walls laminated with minute tubules. Lunaria laminated, indistinct. Vesicles adjacent to mesotheca only at noncelluliferous branch margins. Stereom laminated with tubules in exozone.
References
d'Orbigny, A. D., , 1849, Description de quelques genres nouveaux de Mollusques Bryozoaires: Rev. Mag. Zool., ser. 2, v. 1, p. 499-504.