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Paramphipora
Classification
Phylum:
Porifera
Class:
Stromatoporoidea
Order:
Amphiporida
Superfamily:
Unknown
Family:
Amphiporidae
Formal Genus Name and Reference:
Paramphipora YAVORSKY, 1955, p. 154
Type Species:
P. mirabilis, OD, holotype, CNIGR 7351/236
Images
(Click to enlarge in a new window)
Fig. 481a. *P. mirabilis, holotype, CNIGR 7351/236, Ludlow, River Chernevaya, Salair, axial to tangential sections showing vacuolate skeletal material, X10 (Yavorsky, 1955). --FiG. 481 b-e. P. michelini (Nguyen Hung & Mistiaen), Beaulieu Formation, Frasnian, Boulonnais, France, b, holotype, transverse section, GFCL 1507, showing vacuolate microstructure, X20, c, holotype, drawing of transverse section, X13, d, hypotype, drawing of transverse section, GFCL 1490, X13, e, paratype, drawing of axial section, GFCL 149, X13 (Nguyen Hung & Mistiaen, 1997).
Synonyms
Vacuustroma
Geographic Distribution
Russia (Belyj Island), ?Wenlock, Russia (northwestern Kuznetsk Basin, Salair, western Pre-Urals, Ulachan Sis), Ludlow, Russia (northeastern Siberia, Salair), Uzbekistan, Vietnam, Lower Devonian, Kara Kalpaksk, China (Guizhou, Guangxi), Russia (Tyrgan), Turkey, Middle Devonian, France (Boulonnais), Russia (Lochitina Sea, northern Pre-Urals, western PreUrals, Kuznetsk Basin, Pechora Basin, Urals, River Chusovaya), Vietnam, Frasnian, Russia (Pechora Basin, western Pre-Urals), ?Famennian, Russia (Urals, River Ai), Vietnam, Givetian, China (Guangxi), Upper Devonian
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
Ending International Stage:
Famennian
Fraction Up In Ending Stage:
100
Ending Date:
359.3
Description
Similar to Amphipora in structure but with skeletal elements of vacuolate microstructure without central axis. [Although several writers (Klovan, 1966; Stearn, 1966, 1997c; Flügel & Flügel-Kahler, 1968; CoCKBain, 1984; Mistiaen, 1988) have questioned the validity of YavorSKY’s genus because it was based on the absence of an axial dark line in the skeletal elements that they considered subject to diagenesis, YavorSKY insisted (1968, 1969a, 1971) that it was equally distinguished by vacuolate microstructure. Since the only characters separating both Paramphipora and Vacuustroma from Amphipora are the lack of the axial line and the presence of vacuoles, the latter (Vacuustroma) is listed as a junior synonym here. Nearly all the more than 60 species that have been ascribed to Paramphipora are found in Russia and China only. Because the diagnoses and types of these species have not been individually examined to see whether they conform to YavorSKY’s definition, the list of occurrences is based on the original generic assignments and should be regarded as tentative.]
References
Yavorsky, V. I. 1955. Stromatoporoidea Sovetskogo Soyuza, chast' pervaya, prilozhenie k chasti pervoy [Stromatoporoidea of the Soviet Union, part 1 & supplement to part 1]. Vsesoiuznogo Nauchno-Issledovatel'skogo Geologicheskogo Instituta (VSEGEI), Trudy (new series) 8:173 p., 11 fig., pl. 1-89.
Museum or Author Information
Classification
Phylum:
Porifera
Class:
Stromatoporoidea
Order:
Amphiporida
Superfamily:
Unknown
Family:
Amphiporidae
Formal Genus Name and Reference:
Paramphipora YAVORSKY, 1955, p. 154
Type Species:
P. mirabilis, OD, holotype, CNIGR 7351/236
Images
(Click to enlarge in a new window)
Fig. 481a. *P. mirabilis, holotype, CNIGR 7351/236, Ludlow, River Chernevaya, Salair, axial to tangential sections showing vacuolate skeletal material, X10 (Yavorsky, 1955). --FiG. 481 b-e. P. michelini (Nguyen Hung & Mistiaen), Beaulieu Formation, Frasnian, Boulonnais, France, b, holotype, transverse section, GFCL 1507, showing vacuolate microstructure, X20, c, holotype, drawing of transverse section, X13, d, hypotype, drawing of transverse section, GFCL 1490, X13, e, paratype, drawing of axial section, GFCL 149, X13 (Nguyen Hung & Mistiaen, 1997).
Synonyms
Vacuustroma
Geographic Distribution
Russia (Belyj Island), ?Wenlock, Russia (northwestern Kuznetsk Basin, Salair, western Pre-Urals, Ulachan Sis), Ludlow, Russia (northeastern Siberia, Salair), Uzbekistan, Vietnam, Lower Devonian, Kara Kalpaksk, China (Guizhou, Guangxi), Russia (Tyrgan), Turkey, Middle Devonian, France (Boulonnais), Russia (Lochitina Sea, northern Pre-Urals, western PreUrals, Kuznetsk Basin, Pechora Basin, Urals, River Chusovaya), Vietnam, Frasnian, Russia (Pechora Basin, western Pre-Urals), ?Famennian, Russia (Urals, River Ai), Vietnam, Givetian, China (Guangxi), Upper Devonian
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
Ending International Stage:
Famennian
Fraction Up In Ending Stage:
100
Ending Date:
359.3
Description
Similar to Amphipora in structure but with skeletal elements of vacuolate microstructure without central axis. [Although several writers (Klovan, 1966; Stearn, 1966, 1997c; Flügel & Flügel-Kahler, 1968; CoCKBain, 1984; Mistiaen, 1988) have questioned the validity of YavorSKY’s genus because it was based on the absence of an axial dark line in the skeletal elements that they considered subject to diagenesis, YavorSKY insisted (1968, 1969a, 1971) that it was equally distinguished by vacuolate microstructure. Since the only characters separating both Paramphipora and Vacuustroma from Amphipora are the lack of the axial line and the presence of vacuoles, the latter (Vacuustroma) is listed as a junior synonym here. Nearly all the more than 60 species that have been ascribed to Paramphipora are found in Russia and China only. Because the diagnoses and types of these species have not been individually examined to see whether they conform to YavorSKY’s definition, the list of occurrences is based on the original generic assignments and should be regarded as tentative.]
References
Yavorsky, V. I. 1955. Stromatoporoidea Sovetskogo Soyuza, chast' pervaya, prilozhenie k chasti pervoy [Stromatoporoidea of the Soviet Union, part 1 & supplement to part 1]. Vsesoiuznogo Nauchno-Issledovatel'skogo Geologicheskogo Instituta (VSEGEI), Trudy (new series) 8:173 p., 11 fig., pl. 1-89.