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Parisograptus caduceus
Taxonomy
Didymograptus caduceus was named by Salter and Bigby (1853). Its type specimen is GSC 26571a and is a compression fossil. Its type locality is The Cote Fréchette, which is in a Darriwilian carbonate mudstone/shale in the Shumardia Limestone Formation of Canada.
It was recombined as Isograptus caduceus by Cooper (1971); it was recombined as Parisograptus caduceus by Maletz and Zhang (2003).
It was recombined as Isograptus caduceus by Cooper (1971); it was recombined as Parisograptus caduceus by Maletz and Zhang (2003).
Subspecies