Check-lists
* List of countries might not be complete
Links and literature
[1] Jan Ove R. Ebbestad & Richard A. Fortey (2019): Late Ordovician trilobites from the Taimyr Peninsula, Arctic Russia, Journal of Systematic Palaeontology, 18:1, 1-135 [as Ceratevenkaspis parnaica Balashova, 1959]
Jan Ove R. Ebbestad & Richard A. Fortey (2019): Late Ordovician trilobites from the Taimyr Peninsula, Arctic Russia, Journal of Systematic Palaeontology, 18:1, 1-135 [as Ceratevenkaspis parnaica Balashova, 1959]