MUSCHELKALK AND FOSSILS. 
3v9 
the Ammonite, called Ceratites by De Haan, in which the 
descending lobes (Fig. 402) terminate in a few small den- 
Fig. 402. Fig. 403. 
Ceratites nodosus, Schloth. Mnschelkalk, Germany. Gervillia {Avicula) socialis 
Side and front view, showing the denticulated out- Schloth. Characteristic 
line of the septa dividing the chambers. - shell of the Muschelkalk. 
ticulations pointing inward. Among the bivalve Crustacea, 
the Estheria miniita^ Bronn (see Fig. 390, p. 370), is abun- 
Fig. 404. 
Encrinns liliiformis, Schlott. Syn. E. monili- Aspidura loricata, Agass. 
formis. Body, arms, and part of stem. «. Upper side. &. Lower side. 
a. Section of stem. Muschelkalk. Muschelkalk. 
dant, ranging through the Keuper, Muschelkalk, and Bunter- 
sandstein; and Gervillia socialis (Fig. 403), having a similar 
range, is found in great numbers in the Muschelkalk of Ger¬ 
many, France, and Poland. . 
