The missing fossils argument; gaps everywhere (Introduction)

by David Turell , Saturday, November 18, 2023, 19:46 (370 days ago) @ David Turell

From evolution news:

https://evolutionnews.org/2023/11/fossil-friday-protists-add-to-the-cambrian-explosion/

"When talking about the Cambrian Explosion, the focus is usually on the abrupt appearance of bilaterian animal phyla with their distinct body plans, which has been called a Big Bang of life. However, the Cambrian Explosion is not restricted to these animals. As I have shown in previous articles, non-bilaterian animals like true sponges and jellyfish also first appeared in the Lower Cambrian. Today we will have a look at a largely ignored part of the Cambrian Explosion. That is the abrupt appearance of several major groups of protists.

"Radiolarians represent an important group of marine zooplankton with beautiful siliceous mineral skeletons that were famously featured in wonderful drawings by the German pioneer Darwinist Ernst Haeckel. Their oldest fossil record is from the Earliest Cambrian (Ediacaran-Cambrian boundary) to Middle Cambrian of China. Thus, they appear right together with the Cambrian Explosion of animal phyla.

"Foraminiferans are amoeboid marine protists, which mostly live in the seafloor sediment and have a calcium carbonate skeleton. Their oldest uncontroversial fossil record is again from the Early Cambrian. Pawlowski et al. (2003) therefore concluded that “Fossil Foraminifera appear in the Early Cambrian, at about the same time as the first skeletonized metazoans.” More recent evidence for late Ediacaran foraminiferans suggests that this group may have originated already with the Avalon Explosion rather than the Cambrian Explosion, but even Hua et al. (2010) admitted that “the oldest unambiguous foraminifers are from Early Cambrian Atdabanian Stage strata.” Possible testate amoebae and possible foraminiferans (Rhizaria) have even been reported from 716-635 million-year-old carbonate rocks in Namibia and Mongolia, which date to a time right after the Sturtian glaciation of the Cryogenian “Snowball Earth”. However, these determinations are only tentative and far from established. At least the tintinnid determinations in the same work have been strongly disputed by Lipps et al. (2012).

***

"Other groups of protists appeared at other periods in Earth history, but they also originated abruptly without gradual transition from assumed precursors. For example, diatoms suddenly appear in the fossil record of the Early Jurassic about 182 million years ago. Coccolithophores (Hapotophyta), which form the chalk of the famous White Cliffs of Dover, appear at the Norian-Rhaetian boundary about 208.5 million years ago.

***

" Darwin’s dilemma of the lack of fossils for this ancient age therefore still holds for at least the ciliates. If there are tintinnid fossils from this ancient time, they have yet to be discovered.”

"Not even the tiniest and most abundant organisms seem to confirm the gradualist predictions of Darwinian evolution. Whenever empirical data from the actual fossil record are used to test this crucial part of the theory, it simply fails. Since gradualism is strongly refuted by the evidence, the theory must be false, because even Richard Dawkins, arguably the most ardent modern popularizer of Darwinism, clearly stated in his bestselling book The Greatest Show on Earth (Dawkins 2009) that “evolution not only is a gradual process as a matter of fact; it has to be gradual if it is to do any explanatory work.” Clinging to a refuted paradigm, in spite of the accumulated conflicting evidence, is not science but rather irrational dogmatic belief." (my bold)

Comment: this is Gould's vindication of his statement gaps are everywhere. I hope this removes dhw's irrational clinging to stepwise evolution as a dogmatic belief. Gaps mean new organism require design because new irreducible complexity is required.