The NASA Goddard Track Slab

Discovered by amateur fossil hunter Ray Stanford in 2012 at NASA Goddard Space Center near Wash. DC

This remarkable find represents the most diverse and dense collection of fossil tracks on one relatively small slab (approx. 8 x 3 ft). It includes over 70 Lower Cretaceous tracks of at least three types of dinosaurs, as well as pterosaurs (flying reptiles), mammals (including the largest Mesozoic mammal track), and invertebrates, plus a coprolite, claw marks, nodosaur scute, and more. Paleontologist Martin Lockley, one of the world's experts on fossil tracks stated: "This is the Cretaceous equivalent of the Rosetta Stone."

For Further Reading:

Glen Kuban's NCFC Newsletter article on the Goddard slab (DRAFT)

Scientific Paper:

A diverse mammal-dominated, footprint assemblage from wetland deposits in the Lower Cretaceous of Maryland Scientific Reportsvolume 8, Article number: 741 (2018)
https://www.nature.com/articles/s41598-017-18619-w

News Coverage & Video clips:

Fox News website, Feb. 1, 2018
Incredible dinosaur 'road' discovery: 'Mother lode' of dino tracks found at NASA site
http://www.foxnews.com/science/2018/02/01/incredible-dinosaur-road-discovery-mother-lode-dino-tracks-found-at-nasa-site.html

New York Times website, Jan. 31, 2018
Where NASA Put a Parking Lot, Dinosaurs and Mammals Once Crossed Paths
https://www.nytimes.com/2018/01/31/science/dinosaurs-footprints-nasa.html

Washington Post
Spectacular dinosaur stomping grounds discovered just outside D.C.
https://www.washingtonpost.com /news/speaking-of-science/wp/ 2018/01/31/spectacular-dinosau r-stomping-grounds-discovered- just-outside-d-c/?utm_term=. f36cc14e080d

American Assoc. for the Advancement of Science, via its SCIENCE Magazine:
http://www.sciencemag.org/news /2018/02/dinosaur-mammal-track s-discovered-nasa-s-backyard?u tm_campaign=news_daily_2018-02 -01&et_rid=299966196&et_cid=18 25718

UK's Daily Mail (not always a credible source, but good coverage in this case:
http://www.dailymail.co.uk/sci encetech/article-5336895/Massi ve-rock-shows-fossilized-track s-dinos-mammals.html