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Eolotagnostus
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Agnostida
Superfamily:
Agnostoidea
Family:
Agnostidae
Formal Genus Name and Reference:
Lotagnostus (Eolotagnostus) Zhou in Zhiqiang Zhou, Li, & QU, 1982, p. 217
Type Species:
* E. gansuensis, OD, holotype (Zhiqiang Zhou, Li, & QU, 1982, pl. 57, fig. 10), \\operatorname{Tr} 008, XIGMR, Beijing
Images
(Click to enlarge in a new window)
Fig. 218,2a,b. *L. (E.) gansuensis (ZноU), Upper Cambrian (Fengshanian), China (Gansu), a, paratype, cephalon, XIGMR \\operatorname{Tr} 007, \\times 5, b, holotype, pygidium, XIGMR \\operatorname{Tr} 008, \\times 5 (Zhiqiang Zhou, Li, & Qu, 1982, pl. 57, Fig. 9-10).
Synonyms
L. (Eolotagnostus)
Geographic Distribution
China (Gansu, Xinjiang, Zhejiang), L. punctatus–Hedinaspis Zone; Kazakhstan, E. scrobicularis Zone; Australia (Tasmania), Iverian.
Age Range
Beginning Stage in Treatise Usage:
uppermost Cambrian
Beginning International Stage:
Cambrian Stage 10
Fraction Up In Beginning Stage:
0
Beginning Date:
491
Ending Stage in Treatise Usage:
uppermost Cambrian, Hedinaspis Zone, E. scrobicularis Zone, Iverian
Ending International Stage:
Cambrian Stage 10
Fraction Up In Ending Stage:
0
Ending Date:
486.85
Description
Cephalon weakly scrobiculate and pygidium nonscrobiculate, median preglabellar furrow absent or weakly developed. Glabella with long (sag.), semiovate to ogival anterior lobe, posterior lobe with F2 furrows angled slightly forward. Pygidial axis variably constricted across M2, with F1 impressed laterally and medially effaced.
References
Zhou, Zhiqiang, Jinseng Li, \& Xinguo Qu. 1982. Trilobita. In Paleontological Atlas of northwest China, Shaanxi-Gansu-Ningxia Volume. Part 1: Precambrian and Early Paleozoic. Geological Publishing House. Beijing. p. 215-294, pl. 57-72.
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Agnostida
Superfamily:
Agnostoidea
Family:
Agnostidae
Formal Genus Name and Reference:
Lotagnostus (Eolotagnostus) Zhou in Zhiqiang Zhou, Li, & QU, 1982, p. 217
Type Species:
* E. gansuensis, OD, holotype (Zhiqiang Zhou, Li, & QU, 1982, pl. 57, fig. 10), \\operatorname{Tr} 008, XIGMR, Beijing
Images
(Click to enlarge in a new window)
Fig. 218,2a,b. *L. (E.) gansuensis (ZноU), Upper Cambrian (Fengshanian), China (Gansu), a, paratype, cephalon, XIGMR \\operatorname{Tr} 007, \\times 5, b, holotype, pygidium, XIGMR \\operatorname{Tr} 008, \\times 5 (Zhiqiang Zhou, Li, & Qu, 1982, pl. 57, Fig. 9-10).
Synonyms
L. (Eolotagnostus)
Geographic Distribution
China (Gansu, Xinjiang, Zhejiang), L. punctatus–Hedinaspis Zone; Kazakhstan, E. scrobicularis Zone; Australia (Tasmania), Iverian.
Age Range
Beginning Stage in Treatise Usage:
uppermost Cambrian
Beginning International Stage:
Cambrian Stage 10
Fraction Up In Beginning Stage:
0
Beginning Date:
491
Ending Stage in Treatise Usage:
uppermost Cambrian, Hedinaspis Zone, E. scrobicularis Zone, Iverian
Ending International Stage:
Cambrian Stage 10
Fraction Up In Ending Stage:
0
Ending Date:
486.85
Description
Cephalon weakly scrobiculate and pygidium nonscrobiculate, median preglabellar furrow absent or weakly developed. Glabella with long (sag.), semiovate to ogival anterior lobe, posterior lobe with F2 furrows angled slightly forward. Pygidial axis variably constricted across M2, with F1 impressed laterally and medially effaced.
References
Zhou, Zhiqiang, Jinseng Li, \& Xinguo Qu. 1982. Trilobita. In Paleontological Atlas of northwest China, Shaanxi-Gansu-Ningxia Volume. Part 1: Precambrian and Early Paleozoic. Geological Publishing House. Beijing. p. 215-294, pl. 57-72.