In which Max presents a lost picture from the history of paleontology: Charles Walcott’s “Sidney crab” complete with massive claws (actually the appendages of a large radiodont)

In which Max Dresow and Katherine Valde glimpse a new philosophy of molecular clock dating

In which Max finally concludes two earlier posts with a double-duty post-a-ganza on the interpretation of Ediacaran macrofossils

In which Max blows your little mind

In which Max remembers the biggest American geological brouhaha of the nineteenth century