perekond

Polygnathoides Branson et Mehl, 1933

Valik taksonit käsitlevast teaduskirjandusest
Viira, V. 1999. Late Silurian conodont biostratigraphy in the northern East Baltic. Bollettino della Società Paleontologica Italiana 37, 2-3, 299-310.
Viira, V. 1994. A new Upper Silurian conodont species from Estonia. Proceedings of the Estonian Academy of Sciences. Geology 43, 1, 32-37. DOI:10.3176/geol.1994.1.03
Viira, V. 1981. Konodonty. Report on stratigraphical scheme of the Upper Silurian Deposits in Vaygach and Southern Novaya Zemlya Region, pp. 174-188. VNII Okeangeolgia.