1870. ] JUDD—NEOCOMIAN. 339 
contains an eminently Aptian or Upper-Neocomian fauna, including 
Ammonites Deshayesi, Leym., A. Martini, D’Orb., Am. Nisus, D’Orb., 
&¢e.; while the lower portion contains a fauna which is as unmis- 
takably that of the Middle Neocomian, comprising Pecten cinctus, 
Sow. (of large size and in great abundance), Ammonites clypeiformis, 
D’Orb., Thracia Phillipsi, Rom., Serpula Phillipsc, Rom., Meyeria 
ornata, Phil. sp., and Terebratula hippopus, Rom. 
The Upper Neocomian beds do not appear to be generally well 
exposed in this country, and only a small fauna has, as yet, been 
recorded from them ; the Middle Neocomian, on the other hand, is 
admirably exhibited at a number of different points, and has yielded 
a large and very interesting series of fossils. 
A few years ago a canal, which passed along the base of the Lin- 
dener Berg, about a mile from the town of Hanover, very well ex- 
posed the Middle Neocomian beds of the Hilsthon, the fossils of 
which were collected by M. Witte. Among these fossils I was 
able to identify the following :— 
Lima (several well-known Speeton 
forms). 
Thracia Phillipsi, Rom. (very large). 
Terebratula hippopus, Rom. 
Meyeria ornata, Phil., sp. (very abun- 
dant), 
Ammonites clypeiformis, D’ Ord. | 
marginatus, Phil. 
-—— rotula, Sow. | 
Nisus, D’ Ord. 
Pecten cinctus, Sow. 
Pholadomya alternans, 6m. 
To the south-west of the town of Hanover, along the northern 
foot of the Deister, the lower beds of the Hilsthon are again well 
exposed. They rest directly upon the ‘‘ Wialderthon,” and consist 
of greyish-blue clays (from 60 to 70 feet thick), full of septaria of 
a greyish-brown colour, and nodules of pyrites. At Bredenbeck, 
in this district, the following large and interesting fauna has been 
found :— 
Belemnites lateralis, Phzl. 
Ammonites concinnus, Phil. 
Phillipsi, Rom. (?). 
—— multiplicatus, Rom. 
—— marginatus, Phil. 
—— nucleus, Phil. (?) 
— noricus, Schloth. 
—— curvinodus, Phil. (?) 
radiatus, Brug.(A. asper, Merian). 
— Gervilianus, D’ Orb. 
Ancyloceras (Crioceras) Hmmerici, Lév. 
Auricula striata, Rém. 
Panopszea plicata, Sow. 
Pleuromya solenoides, Rom. 
Thracia Phillipsi, om. 
Cucullza Schusteri, Rém. 
Pholas constricta, Rom. 
Modiola pulcherrima, Rom. 
Avicula pectinata, Sow. 
Pecten cinctus, Sow. 
orbicularis, Sow. (P. laminosus, 
Miinst.). 
striato-punctatus, Rom. 
Palzmon (?) dentatus, om. 
Meyeria ornata, Phil. sp. 
Pollicipes radiatus, om. 
Serpula quinquecarinata, Rom. 
antiquata, Rom. 
Southwards from the Deister the same beds, under somewhat dif- 
ferent conditions, are again exposed in the Osterwald. We find 
these blue clays of the usual character, containing the following 
fossils :— 
Ammonites clypeiformis, D’ Ord. 
Modiola rugosa, Rom. 
Pholas constricta, Rom. 
Pholadomya alternans, Rom. 
Lyonsia (?) elongata, Reuss, 
