﻿HUDSON 
  RIVER 
  BEDS 
  NEAR 
  ALBANY 
  569 
  

  

  DESCRIPTIONS 
  OF 
  NEW 
  FOSSILS 
  FOUND 
  IN 
  THE 
  

  

  DESCRIBED 
  SHALES 
  

  

  § 
  1 
  BRACHIOPODA 
  

  

  With 
  the 
  exception 
  of 
  a 
  few 
  brachiopods 
  no 
  fossils 
  which 
  could 
  

   assist 
  in 
  establishing 
  the 
  age 
  of 
  the 
  Normans 
  kill 
  shales 
  have 
  

   been 
  found 
  associated 
  with 
  the 
  graptolites. 
  These 
  are 
  small 
  

   chitinous 
  shells 
  which, 
  being 
  invariably 
  strongly 
  exfoliated 
  and 
  

   macerated, 
  have 
  so 
  far 
  not 
  admitted 
  of 
  identification, 
  and 
  are, 
  in 
  

   the 
  literature, 
  usually 
  mentioned 
  as 
  " 
  oboloid 
  shells". 
  Bishop 
  

   (33) 
  speaks 
  of 
  several 
  species 
  of 
  Lingulops. 
  

  

  The 
  shales 
  of 
  Mt 
  Moreno 
  near 
  Hudson 
  have 
  furnished 
  small 
  

   accumulations 
  of 
  such 
  shells, 
  which, 
  similar 
  to 
  the 
  accumulations 
  

   of 
  specimens 
  of 
  Leptobolus 
  insignis 
  in 
  the 
  Utica 
  shale, 
  

   appear 
  to 
  have 
  been 
  caused 
  by 
  drifting. 
  Some 
  of 
  these 
  valves 
  

   have 
  proved 
  to 
  be 
  so 
  well 
  preserved 
  that 
  they 
  deserve 
  notice. 
  

   Three 
  different 
  forms 
  have 
  been 
  made 
  out. 
  

  

  1 
  Paterula 
  amii, 
  Schuchert. 
  Synopsis 
  Amer. 
  foss. 
  Brach., 
  

   bul. 
  U. 
  S. 
  geol. 
  sur. 
  87: 
  301 
  

  

  Paterula 
  (?) 
  sp., 
  Hall 
  and 
  Clarke. 
  Pal. 
  N. 
  Y. 
  1892. 
  v. 
  8, 
  

   pt 
  1, 
  pi. 
  4, 
  fig. 
  1 
  (see 
  pi. 
  1, 
  fig. 
  2) 
  

  

  This 
  is 
  one 
  of 
  the 
  more 
  common 
  forms 
  in 
  the 
  shale. 
  It 
  is 
  char- 
  

   acterized 
  by 
  its 
  oval 
  outline, 
  broad 
  marginal 
  border, 
  narrow, 
  

   marginal 
  pedicle 
  fissure, 
  radiating 
  muscular 
  impressions, 
  and 
  its 
  

   rather 
  strong, 
  lustrous 
  and 
  well 
  preserved 
  shells. 
  

  

  The 
  dimensions 
  of 
  the 
  figured 
  specimen 
  were 
  3 
  mm 
  (length) 
  

   and 
  2.5 
  mm 
  (width). 
  

  

  As 
  the 
  specimens 
  which 
  were 
  sent 
  to 
  Professors 
  Hall 
  and 
  

   Clarke 
  by 
  Mr 
  Ami 
  came 
  from 
  the 
  beds 
  of 
  the 
  city 
  of 
  Quebec, 
  

   which 
  contain 
  the 
  same 
  graptolite 
  fauna 
  as 
  the 
  shales 
  of 
  Mt 
  

   Moreno, 
  it 
  is 
  very 
  probable 
  that 
  the 
  forms 
  from 
  the 
  two 
  localities 
  

   are 
  identical. 
  

  

  2 
  Leptobolus 
  walcotti 
  sp. 
  n. 
  [see 
  pi. 
  1, 
  fig. 
  6-12) 
  

  

  The 
  most 
  common 
  brachiopod 
  is 
  a 
  larger 
  shell 
  of 
  subcircular 
  

   outline, 
  as 
  usually 
  preserved, 
  very 
  slightly 
  convex 
  and 
  provided 
  

  

  