Brachiopoda

Helmersenia ladogensis (Jeremejew, 1856)

Type specimen data
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Synonymy list
1856     Siphonotreta ladogensis sp. nov. — Jeremejew, pp. 73, fig. 5a-c
1860     Helmersenia ladogensis (Jeremejew) — Pander, fig. 2:2-a-g
1861     Siphonotreta ladogensis — Eichwald, pp. 262
1969     Helmersenia ladogensis (Jeremejew, 1856) — Gorjansky, pp. 99, fig. 19:1-21
1973     Helmersenia cf. ladogensis (Jeremejew, 1856) — Biernat, pp. 110, fig. 33:1-7, text fig. 40
1989     Helmersenia ladogensis (Jeremejew, 1856) — Popov & Khazanovitch, pp. 135, fig. Pl. 12:10-15
2000     Helmersenia ladogensis (Jeremejew) — Holmer & Popov, pp. 143, fig. 79:3a-e
Selection of related publications
Nemliher, J., Kurvits, T., Kallaste, T., Puura, I. 2004. Apatite varieties in the shell of the Cambrian lingulate brachiopod Obolus apollinis Eichwald. Proceedings of the Estonian Academy of Sciences. Geology 53, 4, 246-256.
Kaljo, D., Borovko, N., Heinsalu, H., Khazanovich, K., Mens, K., Popov, L., Sergejeva, S., Sobolevskaya, R., Viira, V. 1986. The Cambrian-Ordovician boundary in the Baltic-Ladoga clint area (North Estonia and Leningrad Region, USSR). Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia / Известия Академии наук Эстонской ССР. Геология 35, 3, 97-108.
Gorjansky, V. J. 1969. Inarticulate brachiopods of the Cambrian and Ordovician of the northwest Russian Platform.
References based on distribution