© Jesper Ahlin Marceta 2024
Obdurodon tharalkooschild, an extinct species of platypus, was twice as big as its modern relatives. It lived in fresh waters where it preyed on turtle, frog, and fish. Everything we know about O. tharalkooschild is from a tooth found by paleontologists in 2012. One. Single. Tooth. Given such lack of evidence, how can we claim to know anything about its size, habits, and diet? Is knowledge even possible? Some philosophers of science are pessimists about our prospects to learn about the deep past, of which evidence is scarce. Adrian Currie is not. In his book Rock, Bone, and Ruin, Currie…