Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Were the First Trace Fossils Really Burrows or Could They Have Been Made by Sediment-Displacive Chemosymbiotic Organisms?

Version 1 : Received: 29 December 2021 / Approved: 31 December 2021 / Online: 31 December 2021 (11:20:03 CET)

A peer-reviewed article of this Preprint also exists.

McIlroy, D. Were the First Trace Fossils Really Burrows or Could They Have Been Made by Sediment-Displacive Chemosymbiotic Organisms? Life 2022, 12, 136. McIlroy, D. Were the First Trace Fossils Really Burrows or Could They Have Been Made by Sediment-Displacive Chemosymbiotic Organisms? Life 2022, 12, 136.

Journal reference: Life 2022, 12, 136
DOI: 10.3390/life12020136

Abstract

This review asks some hard questions about what the enigmatic graphoglyptid trace fossils are, documents some of their early fossil record from the Ediacaran-Cambrian transition and explores the idea that they may not have been fossils at all. Most researchers have considered the Graphoglyptida to have had a microbial-farming mode of life similar to that proposed for the fractal Ediacaran Rangeomorpha. This begs the question “What are the Graphoglyptida if not the Rangeomorpha persevering” and if so then “What if…?”. This provocative idea has at its roots some fundamental questions about how to distinguish burrows sensu-stricto from the external molds of endobenthic sediment displacive organisms.

Keywords

Ichnology; Ediacaran; Cambrian; Rangeomorpha; Graphoglyptida; Endobenthos

Subject

EARTH SCIENCES, Palaeontology

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