96 RAFINESQUE’S 
Figure 51, Todarus argo. 
Fig. 52, 53, Anisoctus punctatus and bicolor. 
[66] 
13. DITAXOPUS PARADOXUS, a new Fossil G. of Cephalopodes, 
discovered 1819—Figure 54 and 55, Shell and Animal. 
This was one of my most remarkable discovery in fossil Zoology, 
among the Wasioto hills of Central Kentucky. While breaking 
many fossiliferous flints of that Region, I fell upon one having in © 
the centre, a perfect hollow mould of a Univalve shell, shaped 
between Haliotis and Carinaria, and containing inside a delicate 
flinty Animal almost perfect, of the most extraordinary shape. It 
was however evidently a Cephalopode, since the cupules were con- 
spicuous on the Antenopes; but these were not around the head or 
body, somewhat as in the Cirrhipedes or Terebratules although not 
articulated asin these. Itis difficult to convey a proper idea of 
this strange animal, but the figures will explain it better. 
I carefully put up the fragments of the Stones together, and pre- 
sented this unique specimen (worth 50 dollars) to my friend John D. 
Clifford for his Museum, where it was preserved, and is perhaps yet 
in this {collection, (since gone thro’ 2 or 3 hands) if not stolen or 
broken. I sent descriptions and figures of it to Cuvier and 
Brongniart, but have not heard if they published them. 
This discovery is of double importance, because it links with the 
rare G. Carinaria, of which the animal is as mysterious as that of 
the Argonauta, and may lead us to detect a new order of the 
Cephalopodes class, distinguished by a single elongate branched 
antenope. I gave itthe name of Ditaxopus, meaning 2 rows of feet. 
[67] 
Description. Shell univalve ovate patent smooth with a small 
obtuse knob of spire at base, and an obtuse keel behind,—Animal, 
_ body amorphous in the fossil state, ending in along curved limb 
with above about 6 pairs of antenopes in 2 rows, opposite curved or 
coiled, the upper longer, all obtuse cylindrical with 2 rows of alter- 
nate cupules or tubercles inside. ; 
Found near Estil, Gritstone hills of Central Kentucky imbedded 
in fragments of flint or chert. Size over one inch. The shell was 
destroyed; the fossil being of the very oldest formation. 
