6i6 



Anamnia - - . . 



Anapophyses 



Anchitherium 



Anguillulidae 



Animals and plants 



Anisopleura 



Annelida . - - . 



Annulata - - . . 



Anodonta - . . - 



Anomalurus 



Ant-eaters - - . . 



Antedon - - ' - 



Antennge - - . . 



Antennules- 



Anthropoid Apes 

 Anthropoidea 

 Anthropopithecus 

 Anthropozoic group (Era) - 

 Antelope - - . . 

 Antlers 



Ants 



Ant-lions - - . - 

 Anura - . . . 



Apes 



Aphides . . . . 

 Apis - - - - - 

 Appendicular skeleton of 



Vertebrata 

 Appendicularia - 

 Appendix vermiformis 

 Aptera . . . . 

 Apteria - - . . 

 Apteryx . - . . 



Apus 



Aquatic adaptation of mam- 

 mals - - - - 

 Aqueductus Vestibuli - 

 Aqueous humor of eye 

 Arachnida . - - - 

 Arboreal types of mammals - 

 Archceopteryx 

 Archseornithes - 

 Archenteron 

 Archiannelida - 

 Archichorda 

 Archicoelomata - 

 Archicoele - - - - 

 Archiblast - - - - 

 Archipterygium of fishes 

 Archizoic group (Era) - 



