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Baltograptus geometricus (Törnquist, 1901)

Sünonüümika
1994     Baltograptus geometricus (Törnquist, 1901) — Maletz , lk. 36
2004     Baltograptus geometricus — Bergström et al. , lk. 268
Valik taksonit käsitlevast teaduskirjandusest
Bergström, S. M., Löfgren, A., Maletz, J. 2004. The GSSP of the Second (Upper) Stage of the Lower Ordovician Series: Diabasbrottet at Hunneberg, Province of Västergötland, Southwestern Sweden. Episodes 27, 4, 265-272.
Kaljo, D. 1974. On graptolite zones of Tremadoc and Arenig of Pribaltic and Moscow syneclises. Graptolites of the USSR, pp. 31-36. Nauka.
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