Species
Amorphognathus ordovicicus Branson et Mehl, 1933
Synonymy list
1933     Amorphognathus ordovicica n.sp. — Branson & Mehl , pp. 127, fig. 10:38
1971     Amorphognathus ordovicicus Branson and Mehl, 1933 — Bergström , pp. 134-135, fig. 2:6-7
1971     Amorphognathus ordovicicus Branson and Mehl, 1933 — Bergström , pp. 134, fig. 2:6-7
1978     Amorphognathus ordovicicus Branson and Mehl, 1933 — Bergström , pp. 80, fig. 1-11
1980     Amorphognathus ordovicicus Branson and Mehl, 1933 — Orchard , pp. 16, fig. 4:1-13;17-18
1983     Amorphognathus ordovicicus Branson and Mehl, 1933 — Nowlan , pp. 660, fig. 2:16-17,22,25-27
1986     Amorphognathus ordovicicus Branson and Mehl, 1933 — Savage & Basset , pp. 69, fig. 84:1-21
1991     Amorphognathus ordovicicus Branson and Mehl, 1933 — Ferretti & Serpagli , fig. 1:1-9
2014     Amorphognathus ordovicicus Branson and Mehl, 1933 — Ferretti et al. , pp. 819, fig. 7O; 12A-E
Selection of related publications
Männik, P., Loydell, D. K., Nestor, V., Nõlvak, J. 2015. Integrated Upper Ordovician–lower Silurian biostratigraphy of the Grötlingbo-1 core section, Sweden.  GFF   137,   3,   226-244. DOI:10.1080/11035897.2015.1042032
Männik, P., Viira, V. 2012. Ordovician conodont diversity in the northern Baltic.  Estonian Journal of Earth Sciences   61,   1,   1-14.  Estonian Academy Publishers.  DOI:10.3176/earth.2012.1.01
Kaljo, D., Hints, L., Männik, P., Nõlvak, J. 2008. The succession of Hirnantian events based on data from Baltica: brachiopods, chitinozoans, conodonts, and carbon isotopes.  Estonian Journal of Earth Sciences   57,   4,   197-218. DOI:10.3176/earth.2008.4.01
Viira, V. 1967. Ordovician conodont succession in the Ohesaare core.  Eesti NSV Teaduste Akadeemia Toimetised. Keemia, Geoloogia / Известия Академии наук Эстонской ССР. Химия. Геология   16,   4,   319-329. DOI:10.3176/chem.geol.1967.4.06
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Chordata | 
| Class | Conodonta | 
| Genus | Amorphognathus | 
| Species | complicatus | 
| duftonus | |
| inaequalis | |
| ordovicicus | |
| superbus | |
| tvaerensis | |
| ventilatus | |
| viirae | 
References based on distribution
- Männik & Viira, 2012 Nabala Stage