Lack of early animal fossils: insights from taphonomic experiments on placozoans and their traces
E. Naimark, Y. V. Lyupina, M. A. Nikitin, A. D. Finoshin
This paper shows that Trichoplax, a simple animal, is unlikely to fossilize due to rapid post-mortem disintegration, but their traces may leave ichnofossils.
bioRxiv · Aug 2, 2023 · PreprintPaleontology