X-The ostracoderm Pteraspis Kner and the relationships of the agnathous vertebrates
- 22 October 1935
- journal article
- research article
- Published by The Royal Society in Philosophical Transactions Of The Royal Society B-Biological Sciences
- Vol. 225 (527) , 381-457
- https://doi.org/10.1098/rstb.1935.0015
Abstract
Ever since the attention of geologists turned to the Old Red Sandstone more than one hundred years ago, the shields and isolated plates of the Ostracoderm now known as Pteraspis have been familiar fossils to all who have collected from the lower beds of that formation in the West of England ; indeed, not only are they the commonest fossils in the Lower Old Red Sandstone, but often they are the sole identifiable organic remains present, and are locally abundant.This publication has 4 references indexed in Scilit:
- Fishes of the Jefferson Formation of UtahThe Journal of Geology, 1931
- Studies on the Morphology of the HeterostraciThe Journal of Geology, 1931
- Vertebrata craniata (First fascile: cyclostomes and fishes)Published by Biodiversity Heritage Library ,1909
- Synopsis of the Families of VertebrataThe American Naturalist, 1889