File:The Quarterly journal of the Geological Society of London (13937426081).jpg

548

 MR. 
 T. 
 ROBERTS 
 Otf 
 THE 
 UPPER 
 

In

 Rutlandshire 
 and 
 the 
 southern 
 part 
 of 
 Lincolnshire, 
 Prof. 
 Judd 
 * 
 

recognizes

 the 
 following 
 zoues 
 in 
 the 
 Oxford 
 Clay 
 : 
 — 
 

6.

 Clays 
 with 
 Ammonites 
 of 
 the 
 group 
 of 
 the 
 cordati. 
 

5.

 Clays 
 with 
 Ammonites 
 of 
 the 
 group 
 of 
 the 
 ornati. 
 

4.

 Clays 
 with 
 Belemnites 
 7ia 
 status. 
 

3.

 Clays 
 with 
 Belemnites 
 Oivenii. 
 

2.

 Clays 
 with 
 Nucula. 
 

1.

 Kellaways 
 Rock. 
 

Pive

 of 
 these 
 zones 
 are 
 stated 
 to 
 occur 
 in 
 south-west 
 Lincoln- 
 

shire

 f, 
 the 
 sixth 
 (uppermost) 
 being 
 concealed 
 by 
 drift. 
 

The

 pits 
 at 
 Bardney, 
 Langworthy, 
 Bishop's 
 Xorton, 
 and 
 south 
 of 
 

Peaseholme

 were 
 visited 
 by 
 the 
 author, 
 but 
 the 
 Oxford 
 Clay 
 may 
 

also

 be 
 seen 
 in 
 several 
 other 
 localities. 
 The 
 most 
 important 
 sec- 
 

tions

 are 
 the 
 following 
 : 
 — 
 

Immediately

 to 
 the 
 north 
 of 
 Bardney 
 Station 
 dark 
 blue 
 clays 
 

are

 worked 
 for 
 brick-making. 
 These 
 clays 
 have 
 yielded 
 the 
 follow- 
 

ing

 fossils 
 : 
 — 
 

Plesiosaurus

 (phalanges). 
 

Ichthyosaurus

 (-vertebra). 
 

Ammonites

 cordatus, 
 Sow. 
 

Eugenii,

 Hasp. 
 

Cerithiuni

 muricatum, 
 Sow. 
 

Pinna,

 sp. 
 

Gryphsea

 dilatata, 
 Sow. 
 

Serpula

 sulcata, 
 Sow. 
 

tricarinata,

 Sow. 
 

The

 following 
 Ammonites 
 t, 
 now 
 in 
 the 
 Jermyn 
 Street 
 Museum, 
 

are

 also 
 recorded 
 § 
 from 
 this 
 locality 
 : 
 — 
 

Ammonites

 perarmatus, 
 Sow. 
 

excavatus,

 Sow. 
 

biplex,

 Sow. 
 

Ammonites

 rnacrocephalus, 
 Sow. 
 

arduennensis,

 J)' 
 Orb. 
 

plicatilis,

 Sow. 
 

Most

 of 
 the 
 Bardney 
 fossils 
 are 
 characteristic 
 of 
 Judd's 
 zone 
 of 
 

cordati

 Ammonites. 
 They 
 are 
 also 
 found 
 in 
 the 
 uppermost 
 zone 
 of 
 

the

 Oxford 
 Clay 
 of 
 Huntingdonshire. 
 

 Geology 
 of 
 Rutland, 
 &c. 
 (Mem. 
 Geol. 
 Surv.), 
 p. 
 232. 
 

t

 Geology 
 of 
 S.W. 
 Lincolnshire 
 (Mem. 
 Geol. 
 Surv.), 
 p. 
 70.