Stoyanowites, Ghaderi & Leda & Schobben & Korn & Ashouri, 2014

Ghaderi, A., Leda, L., Schobben, M., Korn, D. & Ashouri, A. R., 2014, High-resolution stratigraphy of the Changhsingian (Late Permian) successions of NW Iran and the Transcaucasus based on lithological features, conodonts and ammonoids, Fossil Record 17 (1), pp. 41-57 : 54

Stoyanowites n. gen.

Derivation of name: after A.A Stoyanow, who gave the first description of paratirolitid ammonoids from the Aras Valley.

Type species: Paratirolites Dieneri Stoyanow, 1910 .

Diagnosis: genus of the Dzhulfitidae with laterally compressed whorl cross section. Ornament with small ventrolateral nodes and often also dorsolateral nodes. Suture line with short external lobe, which reaches only 60 % of the depth of the adventive lobe.

Discussion: the specimens of the new genus are easily separable from the genera Dzhulfites , Paratirolites and Abichites by the laterally compressed whorl cross section with a ratio of whorl width / whorl height of less than 0.80 (usually more than 1.00 and reaching more than 2.00 in the other three genera).