no NORTH AMERICAN INDEX FOSSILS. 



1904 to date. Ulrich, E. O., and Bassler, R. S. A revision of 

 the Paloeozoic Bryozoa. Pt. I., Ctenostomata ; Smithsonian Miscell. 

 Coll. Vol. 45; 256-294, pis. 65-68, 1904; Pt. II. Trepostomata, 

 ibid., vol. 47, pp. 15-55, P ls - 6 -M, i9°4- 



1905. Nickles, John M. The Upper Ordovician Rocks of Kentucky 

 and their Bryozoa. Kentucky Geological Survey Bulletin 5. 



1906. Bassler, Ray S. The Bryozoan Fauna of the Rochester Shale, 

 Bull. 292, U. S. Geol. Survey. 



Mesozoic and Cenozoic. 

 1845. Lonsdale, William. Polyparia from Timber Creek, N. J. 



Quar. Jour. Geol. Soc. London, I., pp. 65-75. Corals from Tertiary 



of North America. Ibid., pp. 495-509. Polyparia from the Eocene 



Tertiary of N. Amer. Ibid., pp. 509-533. 

 i860. Gabb, W. M., and Horn, G. H. Cretaceous corals from 



New Jersey. Proc. Acad. Nat. Sci. Phila., XII., pp. 366-367. New 



species of American Tertiary and Cretaceous fossils. Jour. Acad. Nat. 



Sci. Phila., ser. 2, IV., pp. 375-404. 

 1862. Gabb, W. M. and Horn, G. H. Monograph of fossil Poly- 



zoa of the Secondary and Tertiary of N. Amer. Jour. Acad. Nat. Sci. 



Phila., ser. 2, V., pp. 111-178, pis. xix.-xxi. 

 1890. Gregorio, Antonio de. Monographic de la Faune Eocenique 



rie l'Alabama et surtout de celle de Claiborne de l'Etage Parisien. 



Ann. Geol. et Paleont., Livraisons VII. , VIII. Palermo. 



Artificial Key to Genera. 



I. CTENOSTOMATA. — Zooecia horny or membranaceous, isolated, budding from 



internodes of tubular stolon ; sometimes appearing as excavation in the host... A. 



A. Thread-like, or very slightly swollen in center *. 



* Arrangement net like or pinnate I. Rhopalonaria. 



* Arrangement more or less radial III. Vine/la. 



a. Swollen, bulb or sausage-like ■ **. 



** Arrangement in linear series IV. Allonema. 



** Arrangement radial, at intervals along slender stolon II. Ascodictyon. 



II. CYCLOSTOMATA. — Zooecia simple calcareous tubes, usually without transverse 



partitions, singly or in association B. 



B. Zooecia free throughout in loosely united branches or strings *"**. 



*** Tubes in linear series, budding one from the other uniserially... I. 



1. Dichotomously branching, apertures subterminal V. Stomatopora. 



1. Irregular branching, apertures terminal X. He?-nodia. 



*** Tubes budding on two or more sides from a linear median stolon 2. 



2. Branching; tubes separate and distinct IX. Hederella. 



2. Branching ; tubes closely parallel in contact, and of uniform length. 



XI. Reptaria. 

 B. Zooecia united wholly or partly in bundles of two or more ; no interstitial cells. 



