20Apr 2026 by Post

Beach Stroll Casts Further Doubt on Some Supposed Ediacaran Bilaterian Fossils

air bladder, animals, beach, beachcombing, bilaterian animals, brown algae, Cambrian Explosion, Cambrian News, convergent evolution, Ediacaran biota, Ediacaran fossils, Evolution, evolutionary theory, fauna, flora, fossil-hunting, fossils, hemichordate worms, holdfast, kelp, kelp stipe, Kingdom Protista, Margaretia dorus, Pacific Northwest, paleontology, plants, Precambrian strata, protists, rock hammer, Science (journal), tide-pooling, Western Washington
Over the past few days I’ve been discussing an important paper in the journal Science that reveals supposed Ediacaran bilaterian animal fossils (see here and here, with more to come). Meanwhile, this past weekend, I happened to go on a trip with friends here in Western Washington to do some tide-pooling, beach-combing, and fossil-hunting. We had a fantastic time enjoying the beauty of the inland-coastal Pacific Northwest. During our excursion, I also stumbled on a few things that, with that Science paper in mind, caught my attention. In one instance I found a kelp on the beach with its holdfast still nicely attached. A photo of it is at the top (the holdfast is near the pointy “pick” end of Read More › Source
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03May 2022 by Post

Fact Check: Hawaiian Silverswords Fail the Species Pair Challenge

Argyroxiphium, Arthur G. Hunt, Arthur Hunt, articulated legs, Basilosaurus, bilaterian animals, biology, central nervous system, cichlid fish, compound eyes, Darwinists, dog breeds, Dubautia, Dubautia waialealae, Dunning-Kruger effect, Ediacaran organisms, Evolution, Evolution News, exoskeleton, ferrets, fossil record, gut system, Hawaiian Silverswords, honeycreepers, Joe Felsenstein, John Harshman, Lake Malawi, Life Sciences, Matthew Dickau, molecular clock, mouth parts, no true Scotsman, otters, Pakicetus, Panda's Thumb, Peaceful Science, phenotypic plasticity, Puck Mendelssohn, reading comprehension, Rumraket, Rusophycus, species pair challenge, TimeTree.org, trace fossils, University of Kentucky, Wilkesia, Young Earth Creationists
Even though the differences appear superficially striking, they do not involve any novel body plans (i.e., no new proteins, new tissues, or new organs). Source
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26Mar 2020 by Post

Ancestor of All Animals in 555-Million-Year-Old Ediacaran Sediments?

annelids, arthropods, bilaterian animals, Buddenbrockia plumatellae, burrowing, Cambrian Explosion, Cambrian News, China, cnidarians, Deuterostomia, Ediacaran animals, Evolution, Germany, habitus, Helminthoidichnites, Ikaria wariootia, incertae sedis, microbial mats, mortichnia, Nephrozoa, PNAS, Proceedings of the National Academy of Sciences, Protostomia, Scyphozoa, South Australia, UC Riverside, University of California, Xenacoelomorpha, Yilingia spiciformis
For my series of articles about alleged Ediacaran animals predating the Cambrian explosion there is a new candidate that deserves a closer view: New research on Ediacaran fossils was just published in the Proceedings of the National Academy of Sciences by a team of scientists from UC Riverside (Evans et al. 2020), and it has already made global news headlines including, “Ancestor of all animals identified in Australian fossils” (University of California 2020) and the even more sensational, “Fossil hunters find evidence of 555m-year-old human relative” (Davis 2020). What did those scientists discover and are their far-reaching conclusions really justified?  Grains of Rice The authors of this study looked at fossil layers from the National Heritage Nilpena site in the Flinders Range of South Australia, which are slightly older than…
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17Jan 2020 by Post

Did Cloudinids Have the Guts to Be Worms?

Acuticocloudina, bilaterian animals, bilaterian worms, Cambrian Explosion, Cambrian News, Cambrian Small Shelly Fauna, Chengjiang biota, China, Cloudina, cloudinids, cloudinomorphs, cnidarian, Conotubus, Costatubus, Darwinian evolution, Dickinsonia, digestive tract, Ediacaran biota, Ediacaran Period, Ediacaran Small Shelly Fauna, Ediacaran-Cambrian boundary, Evolution, Feiyanella, Germany, GUT, James D. Schiffbauer, Multiconotubus, Nature Communications, Nevada, polyp, Rajatubulus, Saarina, sessile filter feeder, Sinotubulites, skeleton, University of Missouri, Wood Canyon Formation
In my Evolution News article “Why Dickinsonia Was Most Probably Not an Ediacaran Animal” (Bechly 2019), I promised last year to follow up on other alleged Ediacaran animals. Now is a good moment to come back to this, because a new study has just been published in the journal Nature Communications by Schiffbauer et al. (2020), who identify a problematic Ediacaran shelly fossil as a bilateral animal most likely related to annelid worms. The crucial evidence is the alleged preservation of a digestive tract, which would also represent the oldest fossil record for this organ system (Stann 2020). The new fossil is considered to be a close relative of the genus Cloudina, which is a globally distributed Ediacaran index fossil first described by Germs (1972). It represents one of the…
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