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Oldest known trackways produced by bilaterian animals with paired appendages

Started by ImADinosaurRARR, June 07, 2018, 06:59:42 PM

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ImADinosaurRARR

June 07, 2018, 06:59:42 PM
Open access paper: http://advances.sciencemag.org/content/4/6/eaao6691.full



The image above shows trackways from the Ediacaran. The animal that made these appears to have 4 to 5 pairs of legs and a 1.38 cm width. These tracks are 551 to 541 million years old, so were right before the Cambrian explosion.

TW1 appears to enter UB1 and TW2 also appears to enter UB3, with TW2 walking over another burrow, showing that these tracks were on the surface and not somehow underground.

Probably doesn't interest most of you, but I'm been in an Ediacaran mood lately and it's great to have something vaigely recognizable from that period. 

ceratopsian

#1
June 08, 2018, 06:50:20 AM
Quote from: ImADinosaurRARR on June 07, 2018, 06:59:42 PM
........

Probably doesn't interest most of you, but I'm been in an Ediacaran mood lately and it's great to have something vaigely recognizable from that period.

Thanks for posting this.  It's a really exciting find I think.  I'll be reading the paper on the tube to work this morning.

Joe the Spinosaurus

#2
June 09, 2018, 08:13:47 PM
I haven't even heard of this! I think people should be celebrating this find more.

Neosodon

#3
June 11, 2018, 08:06:38 PM
Precambrian fossils are always rare and exiting.

"3,000 km to the south, the massive comet crashes into Earth. The light from the impact fades in silence. Then the shock waves arrive. Next comes the blast front. Finally a rain of molten rock starts to fall out of the darkening sky - this is the end of the age of the dinosaurs. The Comet struck the Gulf of Mexico with the force of 10 billion Hiroshima bombs. And with the catastrophic climate changes that followed 65% of all life died out. It took millions of years for the earth to recover but when it did the giant dinosaurs were gone - never to return." - WWD

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