Evolution/extinction 0.0 / 5 ? BiologyEvolution, extinction and natural selectionGCSENone Created by: Irritating dogCreated on: 24-11-20 09:56 234615 Across 1. The most famous dinosaur. (13, 3) 4. an ancient ratfish with a swirl of teeth in its mouth. (12) 5. The preserved remains of an extinct creature. (6) Down 2. a half-bird dinosaur. (13) 3. The process of weaker things dying and stronger living. (7, 9) 6. A hippo-like animal with a stylus in it. (11)
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