278 Sheppard: Recent Geological Discoveries at Speeton, 
preserved, with the sculpture remarkably sharp, and_ the 
trumpet-shaped mouth indicative of full growth. 
The nodules of this part of the Kimeridge, though much 
smaller, are far more pyritous than those of its higher horizons, 
and the difficulty of extracting a fossil from such a matrix must 
be experienced to be appreciated. In the working out, various 
small ammonites were found, evidently belonging to the genus 
Hoplites, and probably to the species pseudomutabilis Loriol. 
In ‘Argiles de Speeton et Leurs Equivalentes,’ A. Pavlow et 
G. W. Lamplugh, Moscow, 1892, p. 110, this species is referred 
to: (Translated) ‘The specimen here figured belongs to the 
Geneva Museum, and is preserved in Pictet’s Collection under 
the name Ammonites biplex loc. Speeton. Its characters 
perfectly correspond to the description of Ammonites lacertosus 
Fontannes, which description we do not reproduce. The 
horizon of the specimen in the Speeton Section is not indicated, 
but Mr. Lamplugh possesses a less well-preserved specimen ot 
the same species, which he found near the outcrop of the Upper 
‘F.’ Shales. In the shales themselves one often finds crushed 
ammonites suggestive of this species, but difficult to determine 
with precision.’ 
In the above the work the synonymy of the species is given 
as Pertsphinctes lacertosus Dum et Font, 1876. Ammonites 
(Perisphinctes) lacertosus Dumortier et Fontannes, Crussol, 
p. 100: and 1877; Ammonttes (Perisphinctes) lacertosus Loriol, 
Pl @6Ve few, Baden, Piavale ies Wp se: 
The species now under consideration is apparently that 
known in this country under the name of Ammonztes biplex, and 
as the specimen now obtained is probably the best that has 
come from the Filey Bay deposits, it is thought advisable to 
place its present location on record. 
Crocodilian remains.—Another interesting find was made 
by Mr. Danford in an exposure of the lower part of the Upper 
Kimeridge Clay, about 400 yards north of Reighton Gap. In this 
case several vertebree, a femur, ribs, scutes, etc., were obtained, 
and on these being submitted to Dr. A, Smith Woodward he 
identified the remains as of S¢eneosaurus. On the completion of 
the examination of other similar remains in the British Museum, 
it will be possible to give the specific name. A typical dorsal 
vertebra from Speeton measures 2+ inches in length, and 14 inches 
across, laterally. The bony scutes are particularly interesting, 
as nothing of the kind appears to have been obtained here 
previously. They are somewhat irregular in shape, about 
Naturalist, 
