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Parallelostroma
Classification
Phylum:
Porifera
Class:
Stromatoporoidea
Order:
Syringostromatida
Family:
Parallelostromatidae
Formal Genus Name and Reference:
Parallelostroma NESTOR, 1966a, p. 52
Type Species:
Stromatopora typica ROSEN, 1867, p. 58, OD, holotype, IGTUT Co3009
Images
(Click to enlarge in a new window)
Fig. 472a-d. *P. typicum (Rosen), holotype, IGTUT Co3009, Ludlow, Saaremaa, Estonia, a, longitudinal section, X10, b, tangential section, X10, c, longitudinal section showing orthoreticular microstructure, X25, d, tangential section showing autotubes between pachysteles, X25 (Stearn, 2011b).
Synonyms
Geographic Distribution
Mongolia, Russia (Pechora Basin, Pre-Urals), Ukraine (Podolia), Wenlock, Canada (Quebec), China (Inner Mongolia) Estonia, Russia (eastern Urals), Sweden (Gotland), Ukraine (Podolia), USA (New York), Ludlow-Pridoli, Canada (Arctic Island), Estonia, Ukraine (Podolia), USA (New York), Lochkovian, China (Guangxi, Inner Mongolia, Sichuan), Russia (eastern Urals), Lower Devonian, China (Guangxi), Russia (western Urals, Arctic Island), ?Middle Devonian, China (Guangxi), ?Frasnian
Age Range
Beginning Stage in Treatise Usage:
Silurian (Wenlock)
Beginning International Stage:
Sheinwoodian
Fraction Up In Beginning Stage:
0
Beginning Date:
432.93
Ending Stage in Treatise Usage:
Upper Devonian (?Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Pachystromes thick, composed of orthoreticular skeletal material enclosing multiple microlaminae and micropillars, short autotubes separate pachysteles at their base. Pachysteles of orthoreticular microstructure, largely confined to space between pachystromes, some superposed, in tangential section forming closed network penetrated by autotubes.
References
Nestor, Heldur. 1966a. Stromatoporoidei venloka i ludlova Éstonii [Wenlockian and Ludlovian Stromatoporoidea of Estonia]. Akademiia Nauk Ėstonskoi SSR, Institut Geologii, "Valgus." Tallinn. 87 p., 18 fig., 24 pl., 7 tables.
Museum or Author Information
Classification
Phylum:
Porifera
Class:
Stromatoporoidea
Order:
Syringostromatida
Family:
Parallelostromatidae
Formal Genus Name and Reference:
Parallelostroma NESTOR, 1966a, p. 52
Type Species:
Stromatopora typica ROSEN, 1867, p. 58, OD, holotype, IGTUT Co3009
Images
(Click to enlarge in a new window)
Fig. 472a-d. *P. typicum (Rosen), holotype, IGTUT Co3009, Ludlow, Saaremaa, Estonia, a, longitudinal section, X10, b, tangential section, X10, c, longitudinal section showing orthoreticular microstructure, X25, d, tangential section showing autotubes between pachysteles, X25 (Stearn, 2011b).
Synonyms
Geographic Distribution
Mongolia, Russia (Pechora Basin, Pre-Urals), Ukraine (Podolia), Wenlock, Canada (Quebec), China (Inner Mongolia) Estonia, Russia (eastern Urals), Sweden (Gotland), Ukraine (Podolia), USA (New York), Ludlow-Pridoli, Canada (Arctic Island), Estonia, Ukraine (Podolia), USA (New York), Lochkovian, China (Guangxi, Inner Mongolia, Sichuan), Russia (eastern Urals), Lower Devonian, China (Guangxi), Russia (western Urals, Arctic Island), ?Middle Devonian, China (Guangxi), ?Frasnian
Age Range
Beginning Stage in Treatise Usage:
Silurian (Wenlock)
Beginning International Stage:
Sheinwoodian
Fraction Up In Beginning Stage:
0
Beginning Date:
432.93
Ending Stage in Treatise Usage:
Upper Devonian (?Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Pachystromes thick, composed of orthoreticular skeletal material enclosing multiple microlaminae and micropillars, short autotubes separate pachysteles at their base. Pachysteles of orthoreticular microstructure, largely confined to space between pachystromes, some superposed, in tangential section forming closed network penetrated by autotubes.
References
Nestor, Heldur. 1966a. Stromatoporoidei venloka i ludlova Éstonii [Wenlockian and Ludlovian Stromatoporoidea of Estonia]. Akademiia Nauk Ėstonskoi SSR, Institut Geologii, "Valgus." Tallinn. 87 p., 18 fig., 24 pl., 7 tables.