TABLE A: SUBDIVISIONS OF -5 



56 Palaeontology. 



'56( 1 1 ) Stratigraphical 



[divided as in Table C (11)]. 



56(2-9) Regional 



[divided as in Table C]. 



561 Fossil plants. 



562-569 Fossil animals. 



562 Invertebrates 



5631 Protozoa 



'5633 Coelenterata 



564 Mollusca 



565 Articulata 



566 Vertebrates i- [0*^-59]. 



567 Fishes 



5676 Amphibia 



5681 Eeptiles 



5682 Birds 



'569 Mammals 



57 Biology. 



Anthropology. 



'571 Prehistoric. 



572 Ethnologic. 



'573 Natural history of Man [see also '5999]. 



Special Biology. 



575 Evolution. 



5751 Heredity. 



5752 Variation. 



'5753 Environment. 



'5754 Natural selection. 



'5757 Degeneration. 



'576 Origin of life. 



5763 Cells. 



'5768 Bacteriology [see also '61601]. 



'577 Properties of living matter. 



5771 Biological chemistry. 



5772 Life. 



'5773 Biological physics. 



18 



