Petrus Simon Pallas (1741-1811), ichthyologist and explorer of Siberia and Asia. He studied the geology, botany and zoology, working in the laboratory of Ichthyology created by Peter the Great. He observed the transit of Venus. Berlin.
Pallas, Petrus Simon. 1770. "Spicilegia Zoologica quibus novae imprimis et obscurae animalium species iconibus, descriptionibus atque commentariis illustrantur". Berolini, Gottl. August. Lange. 1:1-56 (ffm00448)