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Drepanuroides
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Redlichiida
Superfamily:
Redlichioidea
Family:
Yinitidae
Formal Genus Name and Reference:
Drepanuroides W. Chang, 1966, p. 157, Mayiella (Xishuiella) Yin in Yin & LI, 1978, p. 421
Type Species:
D. latilimbata, OD, holotype (W. Chang, 1966, pl. 2, fig. 8), 18158, NIGP, Nanjing
Images
(Click to enlarge in a new window)
Fig. 286,2. *D. latilimbata, eastern Yunnan (Yiliang), cranidium, \\mathrm{X}_{1} (W. Chang, 1966).
Synonyms
Mayiella (Xishuiella) Yin in Yin & Li, 1978, p. 421 (type, M. (X. xishuiensis, OD)
Geographic Distribution
China (eastern Yunnan, northern Guizhou), 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
Differs from Drepanopyge in having broad and shallow glabellar furrows, long (sag., exs.) anterior border, and distinct paradoublural line in front of glabella, prominent occipital spine. Librigena with broad (tr.) border and narrower (tr.) genal spine. Thorax with 10 segments and longer pleural spines increasing in size regularly toward posterior. Pygidium with 5 pairs of broad based marginal spines of variable length, anterior pair enlarged or continuing into long spines. Doublure broad. Lower Cambrian (lower Canglangpuan): China (eastern Yunnan, northern Guizhou), Drepanuroides Zone.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Redlichiida
Superfamily:
Redlichioidea
Family:
Yinitidae
Formal Genus Name and Reference:
Drepanuroides W. Chang, 1966, p. 157, Mayiella (Xishuiella) Yin in Yin & LI, 1978, p. 421
Type Species:
D. latilimbata, OD, holotype (W. Chang, 1966, pl. 2, fig. 8), 18158, NIGP, Nanjing
Images
(Click to enlarge in a new window)
Fig. 286,2. *D. latilimbata, eastern Yunnan (Yiliang), cranidium, \\mathrm{X}_{1} (W. Chang, 1966).
Synonyms
Mayiella (Xishuiella) Yin in Yin & Li, 1978, p. 421 (type, M. (X. xishuiensis, OD)
Geographic Distribution
China (eastern Yunnan, northern Guizhou), 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
Differs from Drepanopyge in having broad and shallow glabellar furrows, long (sag., exs.) anterior border, and distinct paradoublural line in front of glabella, prominent occipital spine. Librigena with broad (tr.) border and narrower (tr.) genal spine. Thorax with 10 segments and longer pleural spines increasing in size regularly toward posterior. Pygidium with 5 pairs of broad based marginal spines of variable length, anterior pair enlarged or continuing into long spines. Doublure broad. Lower Cambrian (lower Canglangpuan): China (eastern Yunnan, northern Guizhou), Drepanuroides Zone.