Some Late Triassic gastropods from the Nayband formation in Central Iran

Gastropods from the Norian (Late Triassic) Nayband Formation near Natanz (Iran)

“…About 40 gastropod species were reported from the Nayband Formation, most of them from the Tabas/Nayband area (Douglas 1929, Nützel & Senowbari-Daryan 1999. Gastropods from the Isfahan area were reported by Fallahi et al (1983) and Nützel et al (2003Nützel et al ( , 2010. Here, a new collection of gastropods is reported from the Nayband Formation in the vicinity of Natanz.…”

“…At Ali Abad, it is one of the most common gastropod species. Nützel et al (2003) showed that the specimen which was reported by Douglas (1929) Etymology.…”

“…Cryptaulax? convexa Nützel et al, 2003 differs from T.? natanzensis from the Nayband Formation near Isfahan in being much larger and in having three equally spaced rows of nodes on the axial ribs of the whorls.…”

“…The Late Triassic genus Chulitnacula Frýda & Blodgett, 2001 is similar but has a pronounced row of nodules well above the abapical suture which angulates the whorl profile. Chulitnacula jenningsi (Douglas, 1929) from the Nayband Formation near Isfahan also shows this character and lacks any spiral striation (Nützel & Senowbari-Daryan 1999, Nützel et al 2003. Pseudokatosira?…”

“…Gastropods of the Nayband Formation were studied by Douglas (1929), Fallahi et al (1983), Nützel & Senowbari-Daryan (1999) and Nützel et al (2003Nützel et al ( , 2010. About 40 gastropod species were reported from the Nayband Formation, most of them from the Tabas/Nayband area (Douglas 1929, Nützel & Senowbari-Daryan 1999.…”