﻿150 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Caryocrinus 
  ornatus 
  Say 
  (Fig. 
  46) 
  (Hall. 
  1852. 
  Pal 
  N. 
  ¥. 
  

   2:216, 
  pi. 
  49 
  and 
  49 
  A) 
  

  

  Distingvdshmg 
  characters. 
  Stem 
  of 
  larger 
  and 
  smaller 
  joints 
  alter- 
  

   nating 
  near 
  the 
  calyx; 
  edges 
  of 
  joints 
  thin 
  and 
  sharp, 
  sometimes 
  

   slightly 
  crenulated 
  or 
  denticulated; 
  articulating 
  surface 
  radiately 
  

   striate 
  halfway 
  to 
  the 
  center; 
  canal 
  round; 
  calyx 
  ovoid 
  to 
  sub- 
  

   globose, 
  the 
  greatest 
  diameter 
  usually 
  below 
  th.e 
  middle; 
  summit 
  

  

  r: 
  

  

  ^. 
  

  

  Fig. 
  46 
  Caryocrinus 
  ornatus 
  

  

  slightly 
  convex 
  with 
  arms 
  sometimes 
  several 
  inches 
  long; 
  upper 
  

   margins 
  of 
  radial 
  and 
  interradial 
  plates 
  indented 
  for 
  the 
  arm 
  plates. 
  

   Mural 
  pores 
  represented 
  on 
  the 
  exterior 
  of 
  the 
  plates 
  by 
  single 
  or 
  

   double 
  rows 
  of 
  tubercles 
  radiating 
  from 
  the 
  centers 
  of 
  the 
  plates 
  to 
  

   their 
  angles 
  ; 
  between 
  these 
  are 
  numerous 
  rows 
  of 
  smaller 
  tubercles 
  

   parallel 
  to 
  the 
  sides 
  of 
  the 
  plates. 
  

  

  