True arthropods are among the most sophisticated animals that appeared without ancestors in the Cambrian explosion.
Many claim the Cambrian explosion was triggered by a sudden global increase in oxygen levels.
Small putative trackways in Siberian rocks are giving evolutionists an opportunity to claim bilaterian animals preceded the Cambrian explosion.
There are some definite “Stop the world, I want to get off” moments in the new Great Minds with Michael Medved podcast from Discovery Institute.
The brutality of what happened to our guide’s family hit all of us like a punch in the gut.