MONOGRAPH 



BRITISH FOSSIL 



B CHIN ODBRM ATA 



THE CRETACEOUS FORMATIONS. 



THOMAS WRIGHT, M.D., P.R.S., F.G.S., 



VICE-PRESIDENT OF THE PAL^ONTOGRAPUICAL SOCIETY; CORRESPONDING MEMBER OF THE ROYAL SOCIETY OP SCIENCES 



OF LIEGE; THE SOCIETY OF NATURAL SCIENCES OP NEUCHATEL; VICE-PRESIDENT OF THE COTTESWOLD 



naturalists' FIELD CLUB; CONSULTING SURGEON TO THE CHELTENHAM HOSPITAL; 



AND MEDICAL OFFICER OF HEALTH TO THE URBAN SANITARY DISTRICTS 



OF CHELTENHAM, CHARLTON KINGS, AND LECKHAMPTON. 



VOLUME I.— THE ECHINOIDEA. 



LONDON: 

 FEINTED FOE THE PALiEONTOGEAPHICAL SOCIETY. 



1864—1882. 



