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Skalograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Subclass:
Graptolithina
Order:
Graptoloidea
Suborder:
Axonophora
Infraorder:
Neograptina
Superfamily:
Monograptoidea
Family:
Monograptidae
Subfamily:
Pristiograprtinae
Formal Genus Name and Reference:
Skalograptus TSEGELNJUK, 1976, p. 100
Type Species:
*Skalograptus vetus, OD, =Monograptus ultimus Perner, 1899, Kříž & others, 1986, p. 322, Koren' & Sujarkova 1997, p. 87
Images
(Click to enlarge in a new window)
Fig. 304,9a-b. S. ultimus (Perner), 9a, lectotype (selected by Pर̌ıbyl, 1948a, p. 77) Praha-Dvorce (formerly Dworetz), Czech Republic (Perner, 1899, fig. 14a), 9b, chemically isolated specimen, Kosov Quarry, Czech Republic, Skalograptus ultimus Biozone, -4 m above base of Pridoli (adapted from Křiž & others, 1986, fig. 36a). Scale bars, 1 mm
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian (Pridoli, Skalograptus parultimus Biozone)
Beginning International Stage:
Pridoli
Fraction Up In Beginning Stage:
0
Beginning Date:
422.73
Ending Stage in Treatise Usage:
Silurian (Pridoli, Skalograptus transgrediens Biozone)
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Tubarium gently ventrally curved, gently dorso-ventrally curved or straight, sicula moderately to strongly ventrally curved, thecae with bilobate apertural elaborations, ranging from gentle undulations to strong lappets oriented antero-laterally, apertures of distal thecae may lack these elaborations, ventral walls of thecae sigmoidal or straight
References
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Subclass:
Graptolithina
Order:
Graptoloidea
Suborder:
Axonophora
Infraorder:
Neograptina
Superfamily:
Monograptoidea
Family:
Monograptidae
Subfamily:
Pristiograprtinae
Formal Genus Name and Reference:
Skalograptus TSEGELNJUK, 1976, p. 100
Type Species:
*Skalograptus vetus, OD, =Monograptus ultimus Perner, 1899, Kříž & others, 1986, p. 322, Koren' & Sujarkova 1997, p. 87
Images
(Click to enlarge in a new window)
Fig. 304,9a-b. S. ultimus (Perner), 9a, lectotype (selected by Pर̌ıbyl, 1948a, p. 77) Praha-Dvorce (formerly Dworetz), Czech Republic (Perner, 1899, fig. 14a), 9b, chemically isolated specimen, Kosov Quarry, Czech Republic, Skalograptus ultimus Biozone, -4 m above base of Pridoli (adapted from Křiž & others, 1986, fig. 36a). Scale bars, 1 mm
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian (Pridoli, Skalograptus parultimus Biozone)
Beginning International Stage:
Pridoli
Fraction Up In Beginning Stage:
0
Beginning Date:
422.73
Ending Stage in Treatise Usage:
Silurian (Pridoli, Skalograptus transgrediens Biozone)
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Tubarium gently ventrally curved, gently dorso-ventrally curved or straight, sicula moderately to strongly ventrally curved, thecae with bilobate apertural elaborations, ranging from gentle undulations to strong lappets oriented antero-laterally, apertures of distal thecae may lack these elaborations, ventral walls of thecae sigmoidal or straight