. Annual report of the Regents. New York State Museum; Science. 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 b
. Annual report of the Regents. New York State Museum; Science. 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.: corniL, horn; /-tOo?^ stone] (1820. Schlotheim. Pctrefactenkiindc, 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. I Cornulites bellistriatus Hall (Fig. 4 56) (1852. Pal N. Y. 2:353, Pl. 85, fig. 13-17, and v. 7, supplement, p. 20, pi. II6A, fig. 12, 13) t* > Distingiushing characters. Wall % -/ thick; annulations slightly marked ^ -^ „. 1 1 , 1 1 • 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 hights. 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 jjooid 'of the colony is inclosed in a membranace- ous, or calcareous, double-walled sac, the zooccmm, into which it can withdraw. The animal possesses a mouth, an aHmentary canal and an anal opening, and, in addition to these, a fringe o
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