The Jarkov Mammoth (named for the family who discovered it) was discovered in 1997 on the Taimyr Peninsula, by a nine-year-old boy in 1997 (I'm kind of jealous). The remains of this 20,380 year old woolly mammoth (Mammuthus primigenius) were extracted from the frozen tundra under winter conditions in September/October 1999. The carcass and the surrounding sediments were taken out of the tundra using heavy equipment. The block in which the woolly mammoth remains are embedded is stored for scientific purposses in an ice cave in Khatanga, Taimyr.
Prehistoric Wildlife a comprehensive online guide to prehistoric creatures.
Pteros the Encyclopedia of Pterosaurs
A Guide to the Orders of Trilobites Trilobites...very cute
Paleozoic Paleontology, rocks, minerals, meteorites and Science News.
Online Biology Library I love the art on this website
Dr. Scott Hartman's Skeletal Drawings
3D Paleo 3D Scans of fossils
Palaeos Paleontology glossary, very useful if you're just getting into it.
Palaeocast Paleontology podcasts.
Natural History Museum This site has a Dinosaur directoy that I enjoy browsing.
Paleophilatelie Website about Paleontology AND Philately I love it.
Note: if you're just starting to immerse in the palentology world, it is extremelly recommended to not reference or get resources from artist David Peters, you can read more about it here