IN THE ANGLO-PARIS BASIN 93 



of the eodentatus Subzone to Lyelliceras lyelli of the typical development of the lyelli 

 Subzone. Beds 2 and 3 contain a closely comparable fauna to that of the English 

 lyelli Subzone except that in England the Tethyan element represented by Desmoceras 

 and Hypophylloceras is absent. Douvilleiceras clementinum is common in Bed 3 at 

 Courcelles but this genus is very uncommon in the lyelli Subzone in England. The 

 species of Brancoceras are somewhat different to those found in England and they 

 frequently show a tendency to a zig-zag arrangement of the ribs as they sweep across 

 the venter. The occurrence of Eubrancoceras aegoceratoides in Bed 2 (iii) is very 

 important for long-range correlation (p. 135). 



The beautifully preserved fauna of Bed 3 includes also bivalves, gastropods, and 

 corals, and it is this horizon that has yielded many of the fine specimens of Hoplites 

 (H.) spp., and Douvilleiceras clementinum from such localities as Dienville, Gaty, or 

 just Aube, found in museum collections. 



The remainder of Bed 4 contains a typical spathi Subzone fauna consisting essenti- 

 ally of species of Hoplites (H.) together with Metahamites sablieri and Inoceramus 

 concentricus. At a height of 8 feet (2-438 m.) from the base of Bed 4 there is a small 

 thickness of clay with scattered pyritised ammonites and this has yielded to the 

 author a single example of Mojsisovicsia delaruei compressa (Spath) . 



Bed 5 probably represents much of the higher part of the spathi Subzone sediments 

 seen at Revigny-sur-Ornain (text-fig. 37), for the species of Hoplites at the top of Bed 

 4 are not particularly high forms. Bed 6 above contains Anahoplites sp. indicating 

 the extreme base of the intermedins Subzone. 



Larcher, Rat & Malapris (1965 ; 246) considered that the section at Villemoyenne 

 (No. 1 of the Tuileries of St. Parres-les-Vaudes) showed a mammillatum Zone sequence. 

 However, P. & J. -P. Destombes (1965 ; 263) and Marie (1965 ; table 1) indicated that 

 there was overlap between the sequence exposed at Villemoyenne and that of 

 Courcelles. The pit is extensive and the dip appears to be negligible. It is situated 

 less than 2 kms SE. of the section at Courcelles and 0-5 km along the road from 

 Villemoyenne to Le Ht. Villeneuve. An examination of the sequence has convinced 

 the writer that it is wholly of high mammillatum Zone age, a conclusion which Dr. 

 P. Destombes has also arrived at (personal communication). 



(e) La Vendue Mignot (Aube) 



The Tuilerie Le Clerc, situated about 200 yds W. of the Di and a few hundred 

 yards S. of the D108 roads at La Vendue Mignot, has been nominated as the type 

 section of the Subzone of Lyelliceras lyelli & Hoplites benettianus by P. & J. -P. 

 Destombes (1965 ; 262, 266). The section is very shallow, like many of the smaller 

 terriers in this region of France, but with the combination of a northerly 3 dip and 

 the slope of the ground surface, approximately 16 feet of weathered clays are exposed 

 (text -fig. 41). The section is situated about 9 kms WSW. of that of Courcelles pres 

 Clerey, and the sequence although well weathered in its upper part is apparently the 

 same. 



Bed 1 was seen to a depth of 7 feet (2-133 m.) but yielded no ammonites to the writer. 

 At 2 inches (0-050 m.) above the base of 2 (i) a single example of Desmoceras latidor- 



