Re: Trachilos footprints ~6 Ma
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Gareth Morgan
Marine sediment settles deep on the
sea floor.
Estuarial sediment happens in
estuaries.
Palaeoichnological sites, per
link...
alternated layers of clay and
sand formed in shallow water bodies, with more or less
marine influence.
hunters-gatherers
in an estuary
In
England, Severn Estuary, Formby Point can be found; in South Wales, Mersey and Kenfig
estuaries. All of them belong to the Mesolithic and Neolithic.
The
Trachilos prints are in carbonate–siliciclastic tidal sedimentation
Google
it for tracks of camels and horses
Idiot
From: AAT@groups.io <AAT@groups.io> on behalf of Allan Krill <krill@...>
Sent: Thursday, October 14, 2021 2:12 PM To: AAT@groups.io <AAT@groups.io> Subject: Re: [AAT] Trachilos footprints ~6 Ma On Thu, Oct 14, 2021 at 01:02 AM, Gareth Morgan wrote:
https://whc.unesco.org/fr/listesindicatives/5851/The fossils and fossil footprints in your reference are in fluvial sedimentary rocks, not marine sedimentary rocks. Here is the paragraph that explains this: Rocks were formed in a moment of the history of the Earth when the climate was cold and dry, and the sea was not where it is today; it had gone back dozens of kilometres towards the South-East of its current position. The former Pehuén co was a great valley of an ancient river and, in its lowest parts, fresh water accumulated during periods of heavy rains that swept along the mud from the nearest ravines. As a consequence, ponds were formed, that were inhabited by waterfowls, and where pumas, deer, guanacos, bears, horses and strange huge animals that are extent today (Megatherium, Macrauchenia, Stegomastodon) came to drink water.
-- AquaticApe.net
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