Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Cardiograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Isograptidae
Formal Genus Name and Reference:
Cardiograptus Harris & Keble in HARRIS, 1916, p. 66
Type Species:
C. morsus, M
Images
(Click to enlarge in a new window)
Fig. 210, 2a *C. morsus, NMV P32148, Chinaman's Creek, Yapeenian 2, Victoria, Australia, scale bar, 5 mm (new)., ——Fig. 210,2b. C. amplus Hsü, 1947, NIGP 136152, SEM photograph, reverse view, scale bar, 1 mm (Fortey, Zhang, & Mellish, 2005, fig. 10A)., _-FIG. 210,2c-d. C. hsui (Mu & LEE), Ningkuo Shale, Western Chekiang, China, 2 c, holotype, NIGP 9733, proximal end in reverse view, 2 d, paratype, NIGP 9734, proximal end in obverse view, scale bars, 1 mm (Mu & Lee, 1958, pl. 1,14).
Synonyms
Paracardiograptus
Geographic Distribution
Australia, New Zealand, China, USA, Canada, Argentina
Age Range
Beginning Stage in Treatise Usage:
Middle Ordovician (upper Dapingian, Cardiograptus morsus Biozone)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
470.34
Ending Stage in Treatise Usage:
Middle Ordovician (lower Darriwilian, Levisograptus austrodentatus Biozone)
Ending International Stage:
Darriwilian
Fraction Up In Ending Stage:
0
Ending Date:
463.8
Description
Scandent, biserial isograptids with increasing thecal length distally, thecae simple with distinct rutella, proximal development derived-isograptid type, dextral, with origin of th $1^{1}$ low in the prosicula
References
Harris, W. J. 1916. The paleontological sequence of the Lower Ordovician rocks in the Castlemaine district. Proceedings of the Royal Society of Victoria (new series) 29:50-74.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Isograptidae
Formal Genus Name and Reference:
Cardiograptus Harris & Keble in HARRIS, 1916, p. 66
Type Species:
C. morsus, M
Images
(Click to enlarge in a new window)
Fig. 210, 2a *C. morsus, NMV P32148, Chinaman's Creek, Yapeenian 2, Victoria, Australia, scale bar, 5 mm (new)., ——Fig. 210,2b. C. amplus Hsü, 1947, NIGP 136152, SEM photograph, reverse view, scale bar, 1 mm (Fortey, Zhang, & Mellish, 2005, fig. 10A)., _-FIG. 210,2c-d. C. hsui (Mu & LEE), Ningkuo Shale, Western Chekiang, China, 2 c, holotype, NIGP 9733, proximal end in reverse view, 2 d, paratype, NIGP 9734, proximal end in obverse view, scale bars, 1 mm (Mu & Lee, 1958, pl. 1,14).
Synonyms
Paracardiograptus
Geographic Distribution
Australia, New Zealand, China, USA, Canada, Argentina
Age Range
Beginning Stage in Treatise Usage:
Middle Ordovician (upper Dapingian, Cardiograptus morsus Biozone)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
470.34
Ending Stage in Treatise Usage:
Middle Ordovician (lower Darriwilian, Levisograptus austrodentatus Biozone)
Ending International Stage:
Darriwilian
Fraction Up In Ending Stage:
0
Ending Date:
463.8
Description
Scandent, biserial isograptids with increasing thecal length distally, thecae simple with distinct rutella, proximal development derived-isograptid type, dextral, with origin of th $1^{1}$ low in the prosicula
References
Harris, W. J. 1916. The paleontological sequence of the Lower Ordovician rocks in the Castlemaine district. Proceedings of the Royal Society of Victoria (new series) 29:50-74.