File:First known animal tracks on land (24279487891).jpg
Original file (1,717 × 2,400 pixels, file size: 2.16 MB, MIME type: image/jpeg)
This is super crazy_ the earliest known tracks of life on land ~515 million years ago in the Cambrian era. Look closely at this busy slab to see quite a number of trackways from two kinds of trace fossils. Models of the animals are above the slab.
Found in 1983 in a quarry north of Kingston Ontario, were two (!!) types of hand-sized to foot-long creatures crawling around in numbers and visible on wet parts of windblown beach sand. Left is Climatichnites, the trackway left by a large sluglike animal and right is Protichnites, the trace fossil for a 16-legged arthropod. Makes you wonder what these critters were grazing on.
And these are large, well-developed and highly-evolved animals with chronological room for even earlier creatures perambulating ashore.
Redpath Museum, McGill University, Montréal, Quebec, Canada. Museum is geotagged.
Allow me to promote the latest global geocience offering, a very, very, very informative, well-written and photogenic coffee-table book published by Nimbus. Four Billion Years and Counting, Canada's Geological History (which has a bit of the back story for this find)
A second interesting trace fossil read is _ Dinosaurs Without Bones, Dinosaur Lives Revealed by their Trace Fossils _ by Anthony J. Martin (2014)
|Source||First known animal tracks on land|
|Author||Mike Beauregard from Nunavut, Canada|
|Camera location||View all coordinates using: OpenStreetMap - Google Earth|
|This file is licensed under the Creative Commons Attribution 2.0 Generic license.|
|This image was originally posted to Flickr by subarcticmike at https://flickr.com/photos/31856336@N03/24279487891. It was reviewed on by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.|
Click on a date/time to view the file as it appeared at that time.
|current||18:06, 3 February 2018||1,717 × 2,400 (2.16 MB)||Geo Swan||Transferred from Flickr via Flickr2Commons|
- You cannot overwrite this file.