DAXFORD : NOTES ON THE SPEETON AMMONITES, 103 
and bluish, rather hard and sphntery. They contained good- 
sized oysters, numbers of small bivalves, and other shells ; also 
many Ammonites, all crushed excepting those in the calcareous 
pyritous nodules, which were better preserved and large, often 
more than a foot across. These Ammonites belong to a form 
of Hoplitcs apparently distinct from those above-mentioned. 
The lower half of a Belemnite, found a little below the band 
of nodular material, afforded the only indication of the exist- 
ence of that fossil at this horizon. The fragment, together 
Avith the impression left by the vanished part of the guard, 
showed that this Belemnite was of the Porrectus type, but 
proportionately shorter, and not the Bel. troslayanus found by 
Mr. Herries. 
Another exposure at a presumably higher level seemed 
nearly devoid of all fossils except Ammonites of the Perisphinctes 
type — P. lacertosus, Dum. et Font. These, like the Hoplites, 
were much crushed, often large, and fairly well preserved only 
in the nodules. It is hard to say what position the beds of 
these isolated exposures occupy in relation to those described 
by Leckenby, but if this Perisphinctes corresponds to 
Ammhiplex they probably form part of his lowest series 
No. 1. 
In most of the much higher beds crushed Ammonites 
abound, and in some near the top they occur as soft and brittle 
yellowish casts, indistinctly appearing to belong to round- 
backed forms. I have also seen detached nodules crowded 
Avith a species much resembling the figure of Olc. {Perisphinctes) 
cf. miatchkoviensis in the "Argiles de Speeton," PL I., fig. 6. 
Zone E (Coprolite Bed). 
In the medley of materials that form this seam there are 
many Ammonite fragments, among which Prof. Pavlow recog- 
nised Olc. (Virgitates) cf. scythicus Michal., Olc. ( — ) cf. Tcherni- 
schowi Michal., Olc. ( — ) cf. Panderi d'Orb, and Olc. ( — ) cf. dorso- 
planus Michal. 
