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Yunnanaspis
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Redlichiida
Superfamily:
Redlichioidea
Family:
Yinitidae
Formal Genus Name and Reference:
Yunnanaspis W. CHANG, 1966, p. 159, 169
Type Species:
Y. bilongispinus, OD, holotype (W. Chang, 1966, pl. 4, fig. 4), 18174, NIGP, Nanjing
Images
(Click to enlarge in a new window)
Fig. 287,1a,b. *Y. bilongispinus, eastern Yunnan (Malong), a, holotype, pygidium, X 4.7, b, incomplete dorsal exoskeleton, X4.7(W. Chang, 1966)."
Synonyms
Geographic Distribution
China (eastern Yunnan), Yunnanaspis 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 Canglangpuan)
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) (lower Canglangpuan)
Ending International Stage:
Cambrian Stage 3
Fraction Up In Ending Stage:
0
Ending Date:
514.5
Description
Glabella broad, tapering forward, frontal lobe well rounded, and glabellar furrows obsolete, border furrow shallow, preglabellar field short (sag.), eye ridge distinct, eye lobe small, posterior area of fixigena broad (tr.) and long, librigena with long genal spine. Thorax with 9 segments. Pygidium with 5 rings, large terminal piece, 5 pleurae ending with 5 pairs of short border spines, and a rear pair of long, backward-directed spines. Lower Cambrian (lower Canglangpuan): China (eastern Yunnan), Yunnanaspis Zone.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Redlichiida
Superfamily:
Redlichioidea
Family:
Yinitidae
Formal Genus Name and Reference:
Yunnanaspis W. CHANG, 1966, p. 159, 169
Type Species:
Y. bilongispinus, OD, holotype (W. Chang, 1966, pl. 4, fig. 4), 18174, NIGP, Nanjing
Images
(Click to enlarge in a new window)
Fig. 287,1a,b. *Y. bilongispinus, eastern Yunnan (Malong), a, holotype, pygidium, X 4.7, b, incomplete dorsal exoskeleton, X4.7(W. Chang, 1966)."
Synonyms
Geographic Distribution
China (eastern Yunnan), Yunnanaspis 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 Canglangpuan)
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) (lower Canglangpuan)
Ending International Stage:
Cambrian Stage 3
Fraction Up In Ending Stage:
0
Ending Date:
514.5
Description
Glabella broad, tapering forward, frontal lobe well rounded, and glabellar furrows obsolete, border furrow shallow, preglabellar field short (sag.), eye ridge distinct, eye lobe small, posterior area of fixigena broad (tr.) and long, librigena with long genal spine. Thorax with 9 segments. Pygidium with 5 rings, large terminal piece, 5 pleurae ending with 5 pairs of short border spines, and a rear pair of long, backward-directed spines. Lower Cambrian (lower Canglangpuan): China (eastern Yunnan), Yunnanaspis Zone.