114 
The Chouteau Group — Rowley. 
In an inch layer of a white or ferruginous (white in fresh 
exposures but stained with iron in weathering) siliceous coarse¬ 
grained sandstone, near the base of the black shales are to be 
found the fish remains mentioned above, together with a small 
Lingula also identical with a form in the shales above. 
The fossils in the Vermicular sandstone are casts and very 
poorly preserved, while the remains in the Lithographic lirne- 
stoneand underlying shales are often in a fine state of preser¬ 
vation. 
Three miles north-east of Curry ville is an outcrop of a 
brownish, earthy, thin-bedded limestone that yields a series of 
fossils unlike either the forms from the Cooper county Chou¬ 
teau or the Lithographic limestones. Unfortunately these 
fossils have been changed to calc-spar and defeat structural 
examination. 
While the Lithographic limestone has but few and small 
corals, these beds offer quite a series of polyps, ranging from 
single corals an inch long to those five or six inches in length. 
One cyathophylloid is extravagantly frilled and may be Dr. 
White’s Chonophyllum sedaliense , while another is very 
tortuous, strongly reminding one oiAmplemis yandellL 
Another is spinose, like a Keokuk Zaphrentis. Along with 
the cyathophylloids are two species of Michelinia,one undoubt¬ 
edly the M. placenta of Dr., White, described in Hayden’s f£th 
annual report; the other an extravagant form mimicking a 
compound cyathophylloid. A fine Syringopora , an Aulopora 
and Zaphrentis calceola complete the list of most striking 
forms. 
Among crinoids are a small Actinocrinus an Ollacrinus a 
Platycrinus and a small blastoid, like Granatocrinus. 
Of brachiopods, a small Spirifera , an Orthis, like that from 
the Kinderhook (Lithographic) at Louisiana but much smaller, 
a little Chonetes, a small Athyris like hirsuta, a large smooth 
Athyris , a Rhynchonella and Strophomena rhomhoidalis , like 
the Burlington variety. 
The presence of Zaphrentis calceola, Michelinia placenta and 
Chonophyllum sedaliense seems to make these beds the equiva¬ 
lent of the Sedalia strata, referred to the Chouteau limestone 
by Dr. White. But as Z. calceola ranges through the entire 
Burlington group and an Orophocrinus, perhaps but a variety of 
