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Ushbaspis
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Redlichiida
Superfamily:
Redlichioidea
Family:
Redlichiidae
Formal Genus Name and Reference:
Ushbaspis Pokrovskaya in Keller & POKROVSKAYA, 1965, p. 81
Type Species:
*U. granulata, OD, holotype (Keller & POKROVSKAYA, 1965, pl. 3, fig. 2), 3579/2, GIN, Moscow
Images
(Click to enlarge in a new window)
Fig. 277,1a. *U. ganulata; southern Kazakhstan (Ushbas); holotype, cranidium, × 2.5 (Keller & Pokrovskaya, 1965).——Fig. 277,1b,c. U. constrictus (CHIEN & YAO); b, northern Sichuan (Chengkou), cranidium, ×3; c, northern Guizhou (Meitan), exoskeleton, ×2 (W. Zhang, Lu, & others, 1980).
Synonyms
Metaredlichioides
Geographic Distribution
Kazakhstan, Ushbaspis limbata Zone; China (Hubei, Guizhou, Sichuan, Xinjiang Uygur Autonomous Region), Drepanuroides Zone.
Age Range
Beginning Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (lower Botoman, lower Canglangpuan)
Beginning International Stage:
Fraction Up In Beginning Stage:
0
Beginning Date:
523
Ending Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (lower Botoman, lower Canglangpuan)
Ending International Stage:
Fraction Up In Ending Stage:
0
Ending Date:
515.58
Description
Glabella cylindrical, with frontal lobe expanded forward, and 4 pairs of glabellar furrows, occipital ring with a median node, preglabellar field as long (sag.) as cranidial border, posterior border furrow broad (exs.), librigena with stout genal spine, thorax with 15 segments, pygidium transversely subelliptical, axis with anterior axial ring and a large terminal piece having a pair of swellings, pleural region narrow (tr.) and with a pair of pleural furrows, surface finely granulose or smooth
References
Keller, B. M., \& N. V. Pokrovskaya. 1965. Novye dannye o vozraste fosforitov Karatau [New information about the age of the phosphorites in Karatau]. Izvestiya Akademii Nauk SSSR, Seriya Geologicheskaya 6:78-91, pl. 1.
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Redlichiida
Superfamily:
Redlichioidea
Family:
Redlichiidae
Formal Genus Name and Reference:
Ushbaspis Pokrovskaya in Keller & POKROVSKAYA, 1965, p. 81
Type Species:
*U. granulata, OD, holotype (Keller & POKROVSKAYA, 1965, pl. 3, fig. 2), 3579/2, GIN, Moscow
Images
(Click to enlarge in a new window)
Fig. 277,1a. *U. ganulata; southern Kazakhstan (Ushbas); holotype, cranidium, × 2.5 (Keller & Pokrovskaya, 1965).——Fig. 277,1b,c. U. constrictus (CHIEN & YAO); b, northern Sichuan (Chengkou), cranidium, ×3; c, northern Guizhou (Meitan), exoskeleton, ×2 (W. Zhang, Lu, & others, 1980).
Synonyms
Metaredlichioides
Geographic Distribution
Kazakhstan, Ushbaspis limbata Zone; China (Hubei, Guizhou, Sichuan, Xinjiang Uygur Autonomous Region), Drepanuroides Zone.
Age Range
Beginning Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (lower Botoman, lower Canglangpuan)
Beginning International Stage:
Fraction Up In Beginning Stage:
0
Beginning Date:
523
Ending Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (lower Botoman, lower Canglangpuan)
Ending International Stage:
Fraction Up In Ending Stage:
0
Ending Date:
515.58
Description
Glabella cylindrical, with frontal lobe expanded forward, and 4 pairs of glabellar furrows, occipital ring with a median node, preglabellar field as long (sag.) as cranidial border, posterior border furrow broad (exs.), librigena with stout genal spine, thorax with 15 segments, pygidium transversely subelliptical, axis with anterior axial ring and a large terminal piece having a pair of swellings, pleural region narrow (tr.) and with a pair of pleural furrows, surface finely granulose or smooth
References
Keller, B. M., \& N. V. Pokrovskaya. 1965. Novye dannye o vozraste fosforitov Karatau [New information about the age of the phosphorites in Karatau]. Izvestiya Akademii Nauk SSSR, Seriya Geologicheskaya 6:78-91, pl. 1.