File:First known animal tracks on land (24279487891).jpg
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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) |
| Date | |
| Source | First known animal tracks on land |
| Author | Mike Beauregard from Nunavut, Canada |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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This image was originally posted to Flickr by subarcticmike at https://flickr.com/photos/31856336@N03/24279487891 (archive). It was reviewed on 3 February 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 18:06, 3 February 2018 | | 1,717 × 2,400 (2.16 MB) | Geo Swan (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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