Graptolithina
Order

Mastigograptida Bates et Urbanek, 2002

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Selection of related publications
Raukas, A., Teedumäe, A. (eds) 1997. Geology and Mineral Resources of Estonia. pp. 1-436. Estonian Academy Publishers.
Obut, A., Rytzk, G. 1958. Ordovician and Silurian Dendroidea of Estonia. ENSV TA Geoloogia Instituudi uurimused III, 125-143.
List of species