THE CRETACEOUS PERIOD. 293 



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(25) 'Monograph of the Belemnitidae ' (Pakeontographical 



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(26) 'Monograph of the Trigoniae' (Palaeontographical So- 

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(27) 'Fossil Cirripedes ' (Palaeontographical Society). Darwin. 



(28) 'Fossil Mollusca of the Chalk of Britain' (Palaeonto- 

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(29) ' Entomostraca of the Cretaceous Formation' (Palaeon- 



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(31) 'Manual of Palaeontology.' Owen. 



(32) ' Synopsis of Extinct Batrachia and Reptilia. ' Cope. 

 (33} " Structure of the Skull and Limbs in Mosasauroid 



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(34) " On Odontornithes " ' American Journ. Sci. and Arts, 



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(35) * Ossemens Fossiles. ' Cuvier. 



(36) ' Catalogue of Ornithosauria. ' Seeley. 



(37) ' Paleontologie Frangaise. ' D'Orbigny. 



(38) ' Synopsis des Echinides fossiles. ' Desor. 



(39) ' Cat. Raisonne des Echinides. ' Agassiz and Desor. 



(40) " Echinoids " ' Decades of the Geol. Survey of Britain. ' 



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(41) 'Paleontologie Franchise. ' Cotteau. 



(42) ' Versteinerungen der Bohmischen Kreide-formation. ' 



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(43)" Cephalopoda, Gasteropoda, Pelecypoda, Brachiopoda, 

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(44) " Cretaceous Reptiles of the United States " ' Smith- 



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(45) ' Invertebrate Cretaceous, and Tertiary Fossils of the 



Upper Missouri Country. ' 1876. Meek. 



