35$ NEW YORK STATE MUSEUM 



Ambonychia orbicularis Emmons (sp.) 



2233 ^i* HYPOTYPE Pterinea orbicularis Emmons, 

 Geology of New York; report on the 2d district. 1842. 



P- 395- 



Ambonychia orbicularis Hall. Paleontology 

 of New York. 1847. v. i, pi. 36, fig. 5a. 



Trenton limestone Watertown N. Y 



Ambonychia un data see Clionychia undata 

 Avicula aequiradiata see Aviculopecten aequira- 

 diatus 



Avicula b e 1 1 a see Aviculopecten bellus 

 Avicula bellula see Aviculopecten bellulus 

 A v i c u la b o y d i see Aviculopecten boydi 

 Avicula chemungensis see Liopteria chemung- 

 ensis 



Avicula chemungensis see Pterinea chemung- 

 ensis 



Avicula communis see Actinopteria communis 

 Avicula decussata see Actinopteria decussata 

 Avicula erecta see Glyptodesma erectum 

 Avicula flabella see Pterinea flabellum 

 Avicula f r a g i 1 i s see Lunulicardium fragile 

 Avicula gebhardi see Aviculopecten gebhardi 

 Avicula laevis see Liopteria laevis 

 Avicula limaeformisjw Limoptera ? limaeformis 

 Avicula longispina see Leptodesma longispinum 

 Avicula manticula see Aviculopecten mantic- 

 ulus 



Avicula muricata see Aviculopecten muricatus 

 Avicula naviformis see Pterinea naviformis 

 Avicula obliquata see Aviculopecten obliquatus 

 Avicula obscura see Pterinopecten i ?) obscurus 

 Avicula orbiculatus see Lyriopecten orbiculatus 

 Avicula pauciradiata^^ Aviculopecten pauci- 

 radiatus 



Avicula schohariae^ Aviculopecten schohariae 

 Avicula securiformis see Pterinea halli 

 Avicula securiformis see Pterinea securiformis 

 Avicula spinigera see Leptodesma spinigerum 



