INDEX 



Acanthoceras, 193 

 Acanthothyris, 185 

 Acceleration, 106 

 Acervularia, 130, 159 

 Acetic acid, 61 

 Acidaspis, 151 

 Acila, 187 



Acmaic acceleration, 1 10 

 Acme, 75, in 

 Acrocnnus, 161 

 Acrosalenia, 182 

 Acrotreta, 142 

 Actaeonina, 169, 191 

 Actinocamax, 77 

 Actinocrinoida, 80 

 Actinocrinus, 161 

 Acton Scott, 33 

 Adolescence, 116 

 Adunata, 137 

 Aeglina, 151 

 Aequipecten, 189 

 Aganides, 170 

 Agassiz, 70 

 Agelacrinus, 161 

 Agglomerate, 26 

 Agglutinantia, 127 

 Agnostus, 150 

 Alcohol, 6 1 

 Alcyonaria, 130 

 Alectryonia t 188 

 Algonkian, 120 

 AUodesma t 145 

 Allorhynchus, 165 

 Allorisma, 168 

 Alveolaria, 202 

 Alveolina, 198 

 Alveolites, 130, 159 

 Amaltheus, 191 

 Amber, 39 

 Amberleya, 190 

 Ammonites, 8; 32, 37, 80 

 evolution, 102, 106 



Ammonites, morphogeny, 97 



preservation, 40 



pyritous, 44, 45 



subdivision, 71, 109 



sutures, 65 

 Ammoniticone, 104 

 Ammonoidea 



deuterozoic, 169 



mesozoic, 191 

 y4 mphidromus, 207 

 Amphoracrinus, 80, 161 

 Amphoridea, 134 

 Amplexus, 130 

 Ampullina, 206 

 Ampyx, 150 

 Anabaciidae, 178 

 Anachronisms, 38 

 Anagenesis, 101, 115 

 Ananchytes, 71 

 Anarcestes, 170 

 Ancyloceras, 103, 192, 193 

 .<4 ngelina, 151 

 Angiosperms, 102 

 Annelida, 49, 86 

 Anomalodesmacea 



cainozoic, 204 



deuterozoic, 168 



mesozoic, 189 



proterozoic, 144 

 Anomia, 204 

 Anorthopygus, 95 

 Antalis t 190 

 Antedon, 180 

 Anthozoa, 129 

 Antrim, 83, 175 

 Apical system, 94 

 Apiocrinus, 180 

 Aporita, 135 

 Aporrhais, 191, 206 

 Apparatus, 53 

 Aptian, 30 



yJ/JMS, 152 



