94 Hargreaves: Fossil Footprints near Scarborough. 
The sand of which the rock is composed is coarse, so that 
only the rough outlines occur, and in some cases the toes appear 
jointed. Some of the fossils are casts in relief, and some are 
imprints. 
With two exceptions, all the footprints, when distinct, are 
three toed, in some cases long and slender, in others broad, 
each toe being markedly conical. Presumably they have been 
made by dinosaurs. 
Some of the prints show that a claw occurred at the end of 
each toe, and the feet are ‘ in-toed.’ 
The Cetiosaurus, of which species there are bones in the 
Scarborough Museum, is the only dinosaur recorded from these 
rocks by Fox-Strangways, but its foot was too large for such 
impressions. MJegalosaurus is also recorded from Corallian 
rocks at Malton, but this animal is hardly likely to have made: 
the footprints. 
The prints vary much in thickness, probably partly due to 
pauses in walking, and partly to varying plasticity in the 
floor. Many footprints are imperfect, and others are confused 
by two or more impressions intermingling. 
There are many shallow grooves on the stones, some ex- 
tending over a foot in length, which may have been made 
by the tail. If this is so it must have been attenuated, as the 
grooves are only half an inch wide, theugh in one case the groove: 
widens to an inch and a half. 
smaller but equally long and distinct impressions occur 
several times, in various directions. These consist of two 
narrow grooves } inch apart. The right hand groove is the 
more pronounced and persistent. Such an impression might 
have been produced by small spines or tubercles on the under 
side of the tail. 
At least two of the blocks apparently contain the casts of 
raindrops. 
The dongest stride measured is 22 inches. In one block 
are four footprints ina line. The stride is about g} inches, and 
the prints vary from 90 x 95 mm. to 75 x 75 mm. _ There 
is a fifth and larger footprint at right angles. 
The photograph (page g2) shows three footprints g2 x 80 ; 
8075; 70x70 mm., of which two belong to the same animal 
and give a stride of ro} inches. A large block contains at least 
g impressions. These indicate strides of 22 inches, 83 and 
114 inches. Five of the prints are of the larger and four of 
the smaller type. On another block is a print, the only one 
of its kind. This contains four toes and measures 83 x68 mm. 
The most interesting block of all contains the largest 
footprint, which measures 150X160 mm. Near it are two foot- 
prints evidently belonging to a different animal, and a third of 
quite a distinct type. 
Naturalist, 
