Cephalopod
Details
Description
This is a cast, the original specimen (a paratype) was transferred to the Institute of Geological Sciences (registered no. GSM 117001) in 1978.
The section is compressed and the venter only slightly flattened; the height increases rather rapidly. The ribs are fairly dense, low and rounded, irregularly with and without ventrolateral spines, of which low flat bases appear on the internal mould.The ribs with tubercles are doubled across the venter. The ribs are slightly bowed forward at midflank and are thus weakly biconcave. First and second lateral saddles of the suture and lateral and umbilical lobes are basically bifid but the lobes are irregularly assymetric; indeed the lateral lobe in the holotype is obviously bifidon the left side but almost trifid on the right. the third lateral saddle is distinctly narrower than the others.
cf. CW Wright 1979 "The ammonites of the English Chalk rock (Upper Turonian); Bull. Br. Mus. Nat. Hist. (geol) 31 (iv) pp281-332.
Found Luton Cutting (LMS), Beds. From Upper Chalk (Cretaceous)
The section is compressed and the venter only slightly flattened; the height increases rather rapidly. The ribs are fairly dense, low and rounded, irregularly with and without ventrolateral spines, of which low flat bases appear on the internal mould.The ribs with tubercles are doubled across the venter. The ribs are slightly bowed forward at midflank and are thus weakly biconcave. First and second lateral saddles of the suture and lateral and umbilical lobes are basically bifid but the lobes are irregularly assymetric; indeed the lateral lobe in the holotype is obviously bifidon the left side but almost trifid on the right. the third lateral saddle is distinctly narrower than the others.
cf. CW Wright 1979 "The ammonites of the English Chalk rock (Upper Turonian); Bull. Br. Mus. Nat. Hist. (geol) 31 (iv) pp281-332.
Found Luton Cutting (LMS), Beds. From Upper Chalk (Cretaceous)
Name/Title
Ammonite
Anisoceras reidi wright sp. nov
Anisoceras reidi wright sp. nov
Accession No
1979.1039
Simple Name
Collection Type
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