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Didymograptus (Didymograptellus)
Taxonomy
Didymograptus (Didymograptellus) was named by Cooper and Fortey (1982) [Sepkoski's age data: O Aren-l].
It was reranked as Didymograptellus by Sepkoski (2002) and Maletz et al. (2018).
It was assigned to Didymograptus by Cooper and Fortey (1982); to Graptoloidea by Sepkoski (2002); and to Pterograptidae by Maletz et al. (2018).
It was reranked as Didymograptellus by Sepkoski (2002) and Maletz et al. (2018).
It was assigned to Didymograptus by Cooper and Fortey (1982); to Graptoloidea by Sepkoski (2002); and to Pterograptidae by Maletz et al. (2018).
Species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1982 | Didymograptus (Didymograptellus) Cooper and Fortey p. 220 |
2002 | Didymograptellus Sepkoski |
2018 | Didymograptellus Maletz et al. p. 23 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Subg. †Didymograptus (Didymograptellus) Cooper and Fortey 1982
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Diagnosis
Reference | Diagnosis | |
---|---|---|
R. A. Cooper and R. A. Fortey 1982 | Didymograptus with pendent habit, rhabdosome gracile to robust. Theca I1 typically originates high on sicula, and of similar length to sicula. Theca I2 dicalycal, with normal isograptid development. |