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Yunnanaspidella
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Redlichiida
Superfamily:
Redlichioidea
Family:
Yinitidae
Formal Genus Name and Reference:
Yunnanaspidella W. CHANG, 1966, p. 159, 169
Type Species:
$* Y$. spinocaudata, OD, holotype (W. Chang, 1966, pl. 4, fig. 7), 18177, NIGP, Nanjing
Images
(Click to enlarge in a new window)
Fig. 288a,b. * Y. spinocaudata, eastern Yunnan (Malong), a, incomplete thorax and pygidium, X_{8}, b, topotype, incomplete exoskeleton, X 2 (W. Chang, 1966)."
Synonyms
Geographic Distribution
China (eastern Yunnan), 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 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
Similar to Yunnanaspis, but preglabellar field shorter (sag.) or absent, eye lobe longer, and posterior area of fixigena shorter (exs.). Pygidium with 4 pairs of relatively small border spines and a 5th pair of long, outwardly and backwardly directed spines.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Redlichiida
Superfamily:
Redlichioidea
Family:
Yinitidae
Formal Genus Name and Reference:
Yunnanaspidella W. CHANG, 1966, p. 159, 169
Type Species:
$* Y$. spinocaudata, OD, holotype (W. Chang, 1966, pl. 4, fig. 7), 18177, NIGP, Nanjing
Images
(Click to enlarge in a new window)
Fig. 288a,b. * Y. spinocaudata, eastern Yunnan (Malong), a, incomplete thorax and pygidium, X_{8}, b, topotype, incomplete exoskeleton, X 2 (W. Chang, 1966)."
Synonyms
Geographic Distribution
China (eastern Yunnan), 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 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
Similar to Yunnanaspis, but preglabellar field shorter (sag.) or absent, eye lobe longer, and posterior area of fixigena shorter (exs.). Pygidium with 4 pairs of relatively small border spines and a 5th pair of long, outwardly and backwardly directed spines.