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Orthograptus
Taxonomy
Orthograptus was named by Lapworth (1873) [Sepkoski's age data: O Llde-u O Ashg-m Sepkoski's reference number: 722]. It is not extant.
It was reranked as Diplograptus (Orthograptus) by Elles and Wood (1907); it was reranked as Glossograptus (Orthograptus) by Ruedemann (1908).
It was assigned to Diplograptus by Elles and Wood (1907); to Glossograptus by Ruedemann (1908); to Orthograptidae by Mitchell (1987); to Orthograptinae by Goldman (1995); and to Graptoloidea by Sepkoski (2002).
It was reranked as Diplograptus (Orthograptus) by Elles and Wood (1907); it was reranked as Glossograptus (Orthograptus) by Ruedemann (1908).
It was assigned to Diplograptus by Elles and Wood (1907); to Glossograptus by Ruedemann (1908); to Orthograptidae by Mitchell (1987); to Orthograptinae by Goldman (1995); and to Graptoloidea by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
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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.
G. †Orthograptus Lapworth 1873
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†Orthograptus eucharis Hall 1865
†Orthograptus fastigatus Davies 1929
†Orthograptus pageanus Elles and Wood 1907
†Orthograptus quadrimucronatus Hall 1865
†Orthograptus ruedemanni Gurley 1896
†Orthograptus spinigerus Elles and Wood 1907
†Orthograptus thorsteinssoni Melchin 1987
Diagnosis
Reference | Diagnosis | |
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D. Goldman 1995 | Orthograptids with Pattern G astogeny and straight to slightly sigmoidal thecae; rhabdosomes commonly septate; thecal apertures commonly bearing paired spines or horns. |