|Edited by||Peter Doyle|
Lethaia is a quarterly peer-reviewed scientific journal of Earth science, covering research on palaeontology and stratigraphy. Now published by Wiley-Blackwell, it was originally published by the International Commission on Stratigraphy. It is an official publication of the International Palaeontological Association and the International Commission on Stratigraphy. According to the Journal Citation Reports, the journal has a 2010 impact factor of 2.282, ranking it 7th out of 48 journals in the category "Paleontology".