On the other hand, Charles Doolittle Walcott, a Smithsonian adventurer, has been cited as the " founder of Precambrian paleobiology . " Although best known as the discoverer of the mid-Cambrian Burgess shale animal fossils, in 1883 this American curator found the " first Precambrian fossil cells known to science " a stromatolite reef then known as " Cryptozoon " algae.
मोबाइल