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Sinodiscus
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Agnostida
Superfamily:
Eodiscoidea
Family:
Calodiscidae
Formal Genus Name and Reference:
Sinodiscus W. Chang in Lu & OTHERS, 1974, p. 83
Type Species:
S. shipaiensis, OD, holotype (W. Chang in Lu & OTHERS, 1974, pl. 31, fig. 5), 37350, NIGP, Nanjing
Images
(Click to enlarge in a new window)
Fig. 245,5a,b. *S. shipaiensis, upper Qiongzhusian (Shipai Formation), western Hubei; a, holotype, cranidium, × 6; b, pygidium, × 6 (Lu & others, 1974).
Synonyms
Tologoja
Geographic Distribution
Mongolia, China (Hubei, Guizhou)
Age Range
Beginning Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (Botomian, upper Qiongzhusian)
Beginning International Stage:
Cambrian Stage 3
Fraction Up In Beginning Stage:
0
Beginning Date:
523
Ending Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (Botomian, upper Qiongzhusian)
Ending International Stage:
Fraction Up In Ending Stage:
0
Ending Date:
517.75
Description
Glabella cylindrical except for gently expanded and rounded anterior lobe and wide LO, reaching anterior border furrow, with 2 transglabellar furrows variably impressed, LO wide, as long as L1, nonspinose, border short, upturned, uniform, palpebral lobe short, level with anterior glabellar lobe, defined by well-impressed palpebral furrow, librigena small. Thorax with three segments. Pygidial axis wide, of two to five rings plus posteriorly rounded terminus isolated from border furrow, pleural furrows well impressed, border narrow, uniform, without marginal spines. Lower Cambrian (Botomian, upper Qiongzhusian): Mongolia, China (Hubei, Guizhou).
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Agnostida
Superfamily:
Eodiscoidea
Family:
Calodiscidae
Formal Genus Name and Reference:
Sinodiscus W. Chang in Lu & OTHERS, 1974, p. 83
Type Species:
S. shipaiensis, OD, holotype (W. Chang in Lu & OTHERS, 1974, pl. 31, fig. 5), 37350, NIGP, Nanjing
Images
(Click to enlarge in a new window)
Fig. 245,5a,b. *S. shipaiensis, upper Qiongzhusian (Shipai Formation), western Hubei; a, holotype, cranidium, × 6; b, pygidium, × 6 (Lu & others, 1974).
Synonyms
Tologoja
Geographic Distribution
Mongolia, China (Hubei, Guizhou)
Age Range
Beginning Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (Botomian, upper Qiongzhusian)
Beginning International Stage:
Cambrian Stage 3
Fraction Up In Beginning Stage:
0
Beginning Date:
523
Ending Stage in Treatise Usage:
Lower Cambrian (“Lower Cambrian” in Trilobite volume of Treatise = current Cambrian Epoch 2 of international scale) (Botomian, upper Qiongzhusian)
Ending International Stage:
Fraction Up In Ending Stage:
0
Ending Date:
517.75
Description
Glabella cylindrical except for gently expanded and rounded anterior lobe and wide LO, reaching anterior border furrow, with 2 transglabellar furrows variably impressed, LO wide, as long as L1, nonspinose, border short, upturned, uniform, palpebral lobe short, level with anterior glabellar lobe, defined by well-impressed palpebral furrow, librigena small. Thorax with three segments. Pygidial axis wide, of two to five rings plus posteriorly rounded terminus isolated from border furrow, pleural furrows well impressed, border narrow, uniform, without marginal spines. Lower Cambrian (Botomian, upper Qiongzhusian): Mongolia, China (Hubei, Guizhou).