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Zhenbaspis
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Redlichiida
Superfamily:
Redlichioidea
Family:
Redlichiidae
Formal Genus Name and Reference:
Zhenbaspis W. Chang & Zhu in Lu, Chang, & OTHERS, 1974, p. 89
Type Species:
Z. lata, OD, holotype (Lu, Chang, & OTHERS, 1974, pl. 34, fig. 1), 21478, NIGP, Nanjing
Images
(Click to enlarge in a new window)
Fig. 277,3. *Z. lata, southern Shaanxi (Zhenba); holotype, cranidium, ×4 (Chang in Lu, Chang, & others, 1974).
Synonyms
Yankongia, Zhenbaspis
Geographic Distribution
China (southern Shaanxi, Guizhou, northeastern Yunnan), Eoredlichia-Wutingaspis Zone.
Age Range
Beginning Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (Qiongzhusian)
Beginning International Stage:
Cambrian Stage 3
Fraction Up In Beginning Stage:
0
Beginning Date:
521
Ending Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (Qiongzhusian)
Ending International Stage:
Cambrian Stage 3
Fraction Up In Ending Stage:
0
Ending Date:
517.75
Description
Cranidium subquadrate, glabella large, broadly cylindrical, with frontal lobe well rounded and 3 pairs of glabellar furrows, preglabellar field gently convex, same length (sag.) as the cranidial border, anterior sections of facial sutures subparallel or slightly divergent, librigena with short and stout genal spine. Thorax and pygidium unknown.
References
Lu, Yenhao, Wentang Chang, Yiyuan Qian, Zhaoling Zhu, Huanling Lin, Zhiyi Zhou, Sengui Zhang, \& Jinliang Yuan. 1974. Cambrian trilobites. In Nanjing Institute of Geology \& Paleontology, A Handbook of the Stratigraphy and Palaeontology of Southwest China. Science Press. Beijing. p. 82-107, pl. 31-42.
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Redlichiida
Superfamily:
Redlichioidea
Family:
Redlichiidae
Formal Genus Name and Reference:
Zhenbaspis W. Chang & Zhu in Lu, Chang, & OTHERS, 1974, p. 89
Type Species:
Z. lata, OD, holotype (Lu, Chang, & OTHERS, 1974, pl. 34, fig. 1), 21478, NIGP, Nanjing
Images
(Click to enlarge in a new window)
Fig. 277,3. *Z. lata, southern Shaanxi (Zhenba); holotype, cranidium, ×4 (Chang in Lu, Chang, & others, 1974).
Synonyms
Yankongia, Zhenbaspis
Geographic Distribution
China (southern Shaanxi, Guizhou, northeastern Yunnan), Eoredlichia-Wutingaspis Zone.
Age Range
Beginning Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (Qiongzhusian)
Beginning International Stage:
Cambrian Stage 3
Fraction Up In Beginning Stage:
0
Beginning Date:
521
Ending Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (Qiongzhusian)
Ending International Stage:
Cambrian Stage 3
Fraction Up In Ending Stage:
0
Ending Date:
517.75
Description
Cranidium subquadrate, glabella large, broadly cylindrical, with frontal lobe well rounded and 3 pairs of glabellar furrows, preglabellar field gently convex, same length (sag.) as the cranidial border, anterior sections of facial sutures subparallel or slightly divergent, librigena with short and stout genal spine. Thorax and pygidium unknown.
References
Lu, Yenhao, Wentang Chang, Yiyuan Qian, Zhaoling Zhu, Huanling Lin, Zhiyi Zhou, Sengui Zhang, \& Jinliang Yuan. 1974. Cambrian trilobites. In Nanjing Institute of Geology \& Paleontology, A Handbook of the Stratigraphy and Palaeontology of Southwest China. Science Press. Beijing. p. 82-107, pl. 31-42.