Sedimented algae mat, RARE 3-digit footprint. El Pueblo late Penn. for Sale

Sedimented algae mat, RARE 3-digit footprint. El Pueblo late Penn. For Sale

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Sedimented algae mat, RARE 3-digit footprint. El Pueblo late Penn.:
$59.00

I have been informed that clay wrinkling is not the appropriate description for the first fossil. These ripple-like forms were algae that became sedimented by wave action. I will list several other algal and/or microbial mats for those who collect them. Their presence in the El Pueblo swamp boosts my Pennsylvanian-age estimate of the site. Water drop impressions are convex or casts from the original rain-impact molds. The tri-digit footprint is a dandy and exhibits the plantar region of the pes (or manus?). Quite rare. Two mysteries remain inCarboniferous/Permian ichnology: Which tetrapod or tetrapods possessedtree-climbingand tree-branch graspingability as the forebears of first primates, and which tetrapods or tetrapods were the forebearsof the tri-digit pes that evolved into the first bipedal dinosaurs? The latter might have been the Bolosauridae (Cope 1878). Please note that we are changing user name from early Permian to late Pennsylvanian because of small Dimetrodon footprints (early stage) and very large amphibian footprints. Please excuse the inconvenience. Based on several fossils an outside age estimate seems to have been erroneous. Revisions are commonplace in geology and paleontology.Please note that all of our fossils are from the continental United States, from NE New Mexico, US, that was once part of Pangea.For background information of our fossils and fossil quarry please visit the following blogs:Exceptional earlyPermian footprints, and, Dimetrodon's ichnology and other Permian footprints.(Copy, open new tab and paste, click on addressif applicable.)Please note that evidence exists that the El Pueblo swamp facies is ofPennsylvanianage (305 MYA). A paperWhen the GeologicTime Scale Does Not Match the Evidence:is availableto read on Academia.edu.This geologic time difference isnegligibleand an early Permian age designation willcontinue.The biological evolution interval is after lobe finned fishes evolvedfeet and before large dinosaursappeared. Contact for any questions you may have.Please note that somehow our return policy changed to no returns. Our policy has always been return within fourteendays for full refund. A Sample Digging showing what were layers of soft sediment (mud) at one time. Most of the sediment collected in layers as sand, soil, and clay from turoffer floodwater settled to the bottom. The sediments concreted into rock much like modern cement sets underwater.