Proceedings of the United States National Museum, Vol. 108

Excerpt from Proceedings of the United States National Museum, Vol. 108: Number 3391-3410

In this paper a short description is given of a new ostracoderm, Pycnaspis splendens, new genus, new species, from the Upper Ordovician of the eastern slope Это и многое другое вы найдете в книге Proceedings of the United States National Museum, Vol. 108