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Procardiograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Isograptidae
Formal Genus Name and Reference:
Procardiograptus XIAO, XIA, & WANG, 1985, p. 435
Type Species:
*Cardiograptus (Procardiograptus) uniformis, OD
Images
(Click to enlarge in a new window)
Fig. 209, 3a-b. *P. uniformis, 3a, NIGP 124849, Hengtang, Zhejiang Province, China, 3b, NIGP 124851 Chenjiawu, Zhejiang Province, China, scale bars, 1 mm (adapted from Chen, Zhang, & Mitchell, 1995, fig. 26B,D, respectively)
Synonyms
Geographic Distribution
China
Age Range
Beginning Stage in Treatise Usage:
Middle Ordovician (upper Dapingian, Oncograptus magnus Biozone)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
470.34
Ending Stage in Treatise Usage:
Middle Ordovician (upper Dapingian, Cardiograptus amplus Biozone)
Ending International Stage:
Dapingian
Fraction Up In Ending Stage:
0
Ending Date:
469.42
Description
Scandent, biserial isograptid with conspicuous, heart-shaped axial cavity in proximal portion, stipes with increasing thecal length and overlap, thecae simple tubes with distinct rutella, proximal development derived-isograptid type, dextral, with origin of th $1^{1}$ low in the prosicula
References
Xiao, Chengxie, Tianliang Xia, & Zhaoyan Wang. 1985. New materials of Cardiograptidae from S. Jiangxi and their evolutionary relationship. Acta Palaeontologica Sinica 24(4):429-439. In Chinese; English abstract p. 438.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Isograptidae
Formal Genus Name and Reference:
Procardiograptus XIAO, XIA, & WANG, 1985, p. 435
Type Species:
*Cardiograptus (Procardiograptus) uniformis, OD
Images
(Click to enlarge in a new window)
Fig. 209, 3a-b. *P. uniformis, 3a, NIGP 124849, Hengtang, Zhejiang Province, China, 3b, NIGP 124851 Chenjiawu, Zhejiang Province, China, scale bars, 1 mm (adapted from Chen, Zhang, & Mitchell, 1995, fig. 26B,D, respectively)
Synonyms
Geographic Distribution
China
Age Range
Beginning Stage in Treatise Usage:
Middle Ordovician (upper Dapingian, Oncograptus magnus Biozone)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
470.34
Ending Stage in Treatise Usage:
Middle Ordovician (upper Dapingian, Cardiograptus amplus Biozone)
Ending International Stage:
Dapingian
Fraction Up In Ending Stage:
0
Ending Date:
469.42
Description
Scandent, biserial isograptid with conspicuous, heart-shaped axial cavity in proximal portion, stipes with increasing thecal length and overlap, thecae simple tubes with distinct rutella, proximal development derived-isograptid type, dextral, with origin of th $1^{1}$ low in the prosicula
References
Xiao, Chengxie, Tianliang Xia, & Zhaoyan Wang. 1985. New materials of Cardiograptidae from S. Jiangxi and their evolutionary relationship. Acta Palaeontologica Sinica 24(4):429-439. In Chinese; English abstract p. 438.