NIAGARA FALLS AND VICINITY l6l 



Class ANNELIDA Macleay 



The annelids, or typical worms, are soft-bodied, marine, fresh- 

 water or terrestrial animals, whose remains can seldom be preserved 

 in a fossil state. It is only the tube-building order (Tubicola) that 

 leaves any satisfactory remains. In these the tube is either a cal- 

 careous secretion of the animal or is composed of agglutinated sand 

 and other foreign particles, being, in each case, wholly external. 

 Worm burrows are often preserved by sand or mud infiltration, a 

 cast of the burrow appearing in the strata. 



Genus cornulites Schlotheim 



[Ety. : coriui, horn; /j'^o?^ stone] 



(1820. Schlotheim. Pctrcfactenkundc, p. 328) 



Tube gently tapering, flexuous, the small end usually bent. The 

 tube is either wholly or in part adherent to other objects. Walls 

 thick, cellular, composed of imbricating rings. Surface ornamented 

 by annulations and longitudinal striae. Interior presenting a suc- 

 cession of annular constrictions, giv- 

 ing a scalariform character to the 

 cast. 



Cornulites bellistriatus Hall (Fig. 

 56) (1852. Pal N. Y. 2:353, pl- 85, 

 fig. 13-17, and v. 7, supplement, p. 

 20, pL 116A, fig. 12, 13) 

 ' Distinguishing characters. Wall 

 thick; annulations slightly marked 



,1 1 . 1 J • 11 Fig. 56 Cornulites bellistriatus 



at base, less strongly and irregularly 



marked in upper portion; fine longitudinal striae well marked 



throughout. 



Found in the talus of Rochester shale, along the Rome, Water- 

 town and Ogdensburg railroad above Lewiston bights. 



Class BRYOZOA Ehrenberg 



The Bryozoa, or Polyzoa, are marine or fresh-water invertebrates, 

 almost always occurring in colonies or zoaria which increase by 

 gemmation. Each ^ooid of the colony is inclosed in a membranace- 

 ous, or calcareous, double-walled sac, the zooeciiim, into which, it can 

 withdraw. The animal possesses a mouth, an alimentary canal and 

 an anal opening, and, in addition to these, a fringe of respiratory 



