Based on the Darwinian narrative, we should expect not only that morphological complexity increases gradually in the fossil record, but we should also expect the same for complex animal behavior. This is because according to Darwinists, “Evolution not only is a gradual process as a matter of fact, but…it has to be gradual if it is to do any explanatory work” (Dawkins 2009). Charles Darwin himself strictly insisted on gradualism and famously quoted the Latin phrase “natura non facit saltus” (“nature does not make jumps”) no fewer than six times in his Origin of Species. He realized that any kind of significant saltational change would imply a miracle-like intelligent intervention.
Therefore, it is a problem for Darwinism if we find evidence that complex behavior, instead of arising gradually, was already present in the oldest animals we know. And indeed, this is exactly what we do find.
Earlier this month the discovery of extended parental care was described for the 520-million-year-old arthropod Fuxianhuia protensa from the Early Cambrian Chengjiang locality in China (Fu et al. 2018). This new discovery made worldwide headlines (Davis 2018, Fox-Skelly 2018, Hugo 2018). It also paralleled two earlier discoveries from a few years ago (Fang 2015, Geggel 2015, Lacerda 2015), which documented brood care in the 508-million-year-old arthropod Waptia from the famous Burgess Shale in Canada (Caron & Vannier 2016), and the discovery of brood care in the Lower Cambrian Chengjiang arthropod Kunmingella douvillei (Duan et al. 2014).More.
Sure. It sounds like a downloaded program. And, these days, Wikipedia is the resource for the “I’m With Stupid” discount on the tee shirt.
See also: Earlier than thought: Worm burrows at rock layers over 600 million years ago
Cambrian fossil shows parent caring for young