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Orthograptus quadrimucronatus
Taxonomy
Graptolithus quadrimucronatus was named by Hall (1865).
It was recombined as Diplograptus (Orthograptus) quadrimucronatus by Elles and Wood (1907); it was recombined as Glossograptus (Orthograptus) quadrimucronatus by Ruedemann (1908); it was recombined as Glossograptus quadrimucronatus by Ruedemann (1947); it was misspelled as Graptolithus quardrimucronatus by White (1874); it was recombined as Orthograptus quadrimucronatus by Lapworth (1873), Berry (1960) and Goldman (1995).
It was recombined as Diplograptus (Orthograptus) quadrimucronatus by Elles and Wood (1907); it was recombined as Glossograptus (Orthograptus) quadrimucronatus by Ruedemann (1908); it was recombined as Glossograptus quadrimucronatus by Ruedemann (1947); it was misspelled as Graptolithus quardrimucronatus by White (1874); it was recombined as Orthograptus quadrimucronatus by Lapworth (1873), Berry (1960) and Goldman (1995).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1865 | Graptolithus quadrimucronatus Hall pp. 144-146 figs. pl. 13 f. 1-10 |
| 1873 | Orthograptus quadrimucronatus Lapworth p. 133 figs. PI. 6, fig. 20 |
| 1874 | Graptolithus quardrimucronatus White p. 13 |
| 1907 | Diplograptus (Orthograptus) quadrimucronatus Elles and Wood pp. 223-224 figs. pl. 28:1a-d; txt. f. 145a-f |
| 1908 | Glossograptus (Orthograptus) quadrimucronatus Ruedemann pp. 385-392 |
| 1947 | Glossograptus quadrimucronatus Ruedemann pp. 452-454 figs. pl.. 78 f. 1-5 |
| 1960 | Orthograptus quadrimucronatus Berry p. 91 figs. pl. 18 f. 1 |
| 1995 | Orthograptus quadrimucronatus Goldman pp. 525 - 530 figs. 10.1-10.19, 11.1-11.6, 15.1-15.5, 17.5-17.9 |
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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.
†Orthograptus quadrimucronatus Hall 1865
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Goldman 1995 | Orthograptus with short single apertural to subapertural spine on thl' and thl2; subsequent thecae bear paired apertural spines; rhabdosomes septate, widen gradually, bear no unusually long thecal spines. |