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Lituigraptus richteri
Taxonomy
Rastrites richteri was named by Perner (1897).
It was recombined as Lituigraptus richteri by Storch (1998).
It was recombined as Lituigraptus richteri by Storch (1998).
Synonymy list
| Year | Name and author |
|---|---|
| 1897 | Rastrites richteri Perner p. 16 figs. pI. 13, fig. 24 a, b. |
| 1998 | Lituigraptus richteri Storch pp. 249 - 250 figs. PI. XVI, fig. I; pI. XVII, figs 1- 7; pI. XV III, fig. 5; text-fig. II , figs 6 A-D |
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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.
†Lituigraptus richteri Perner 1897
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. Storch 1998 | Rhabdosome dorsally coiled in an open, low conical spiral composed of c. 3 whorls. Proximal and mesial thecae rastritid, perpendicular to the rhabdosome, situated on the convex side of the spiral. The conspicuous, dorsally facing apertural hooks s lowly retreat between th I 0 and th20, being substituted by lateral, triangular apertural processes early in the 2nd whorl. Th I is 0.7 mm hi gh, th2 0.8- 1.2 mm, and th20 1.65- 1.85 mm. Distal thecae are robust, inclined at c. 60ยท, separated by narrow interspaces. The dorso-ventral width is 1.8- 2.2 mm in the late 2'" whorl , and up to 2.5- 3.0 mm in the straight distal portion. The 2TRD is 1.2- 1.7 mm at th2- th3, 1.5-2.0 mm at thlO, c. 1.35 mm at th20. Most distal thecae number 7-10 in 10 mm. |