567 - Fossil cold-blooded vertebrates; fossil fishes 223
560 - Paleontology; paleozoology 49
569 - Fossil mammals 21
565 - Fossil arthropods 5
568 - Fossil birds 4
566 - Fossil chordates 2
561 - Paleobotany; fossil microorganisms 1
562 - Fossil invertebrates 1
563 - Fossil marine & seashore invertebrates 1
564 - Fossil mollusks & molluscoids 1