Complex sentence: This determination was later seconded by Alwyne Wheeler, former ichthyologist for the Department of Zoology at the British Natural History Museum, who put forward that the creature was an anglerfish whose pronounced fins had been incorrectly described as being hind legs.
Split into simpler sentences: This determination was later seconded by Alwyne Wheeler; former ichthyologist for the Department of Zoology at the British Natural History Museum. Who put forward that the creature was an anglerfish whose pronounced fins had been incorrectly described as being hind legs.