Stoyanowites aspinosus Korn & Ghaderi 2016
Creators
- 1. Museum für Naturkunde, Leibniz Institut for Research on Evolution and Biodiversity, Invalidenstrasse 43, 10115 Berlin, Germany.
- 2. Department of Geology, Esfahan (Khorasgan) Branch, Islamic Azad University, Esfahan, Iran.
- 3. Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Azadi Square, 9177948974, Mashhad, Iran.
- 4. Utrecht University, Department of Earth Sciences, Princetonlaan 8 A, 3584 CB Utrecht, The Netherlands. & Department of Geology, Esfahan (Khorasgan) Branch, Islamic Azad University, Esfahan, Iran.
- 5. Department of Geology, Esfahan (Khorasgan) Branch, Islamic Azad University, Esfahan, Iran
Description
Stoyanowites aspinosus Korn & Ghaderi in Korn et al., 2016
Fig. 62; Table 36
Stoyanowites aspinosus Korn & Ghaderi in Korn et al., 2016: 885, text-fig. 43.
Diagnosis
Species of Stoyanowites with conch reaching 100 mm dm. Subadult stage with oval, weakly compressed whorl profile (ww/wh =0.70) and rounded venter; 15 narrow and rounded ribs on the flanks. Adult stage with oval and weakly compressed whorl profile (ww/wh = 0.60–0.70) and moderately wide to wide umbilicus (uw/dm =0.40–0.50), rounded venter and rounded ventrolateral shoulder; very weak ribs on the flanks, coarsest in ventrolateral area. Prongs of external lobe bifid; 8–9 notches of E, A and L lobes.
Material examined
Holotype IRAN • West Azerbaijan, Aras Valley section; Paratirolites Limestone, 0.95 m below the top; illustrated by Korn & Ghaderi in Korn et al. (2016: text-fig. 43a); MB.C.25458.
Additional material
IRAN • 1 specimen; Esfahan Province, Baghuk Mountain 1 section; Hambast Formation; MB.C.300978 • 2 specimens; Esfahan Province, Baghuk Mountain A section; Hambast Formation; MB.C.30098 to MB.C.30099 • 1 specimen; Esfahan Province, Baghuk Mountain C section; Hambast Formation; MB.C.30100 • 1 specimen; Esfahan Province, Baghuk Mountain E section; Hambast Formation; MB.C.30101.
Description
Specimen MB.C.30100 is a fragmentary specimen with 72 mm diameter and shows the wide umbilicus (uw/dm =0.50), the nearly parallel-sided whorl profile and the rounded venter. The ornament of the last half volution consists of numerous (about 25) rather sharp ribles, which extend with a shallow sinus across the flanks and turn forward in the ventrolateral area, where they become coarser and for a hooklike rib (Fig. 62A). The venter is smooth.
Remarks
Stoyanowites aspinosus differs from S. dieneri in the absence of dorsolateral nodes and the presence of densely spaced curved riblets on the body chamber. Stoyanowites parallelus sp. nov. differs in the flat venter.
Stratigraphic range
Upper part of the Hambast Formation; 1.80 to 1.60 m below the extinction horizon (Alibashites ferdowsii Zone).
Notes
Files
Files
(6.0 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:57d001f134686bf901891fa37c809d32
|
6.0 kB | Download |
System files
(28.3 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:cf39fbe6b657cd15b7b92c6e4280cfe3
|
28.3 kB | Download |
Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- MB
- Family
- Dzhulfitidae
- Genus
- Stoyanowites
- Kingdom
- Animalia
- Material sample ID
- MB.C.25458 , MB.C.300978 , MB.C.30098, MB.C.30099 , MB.C.30100 , MB.C.30101
- Order
- Ammonoidea
- Phylum
- Mollusca
- Scientific name authorship
- Korn & Ghaderi
- Species
- aspinosus
- Taxon rank
- species
- Type status
- holotype
- Taxonomic concept label
- Stoyanowites aspinosus Korn, 2016 sec. Korn, Hairapetian, Ghaderi, Leda, Schobben & Akbari, 2021
References
- Korn D., Ghaderi A., Leda L., Schobben M. & Ashouri A. R. 2016. The ammonoids from the Late Permian Paratirolites Limestone of Julfa (East Azerbaijan, Iran). Journal of Systematic Palaeontology 14: 841 - 890. https: // doi. org / 10.1080 / 14772019.2015.1119211