Registration No. : |
GSM 18150 . |
Type : |
Holotype |
Identifications : |
New: |
Mollusca: Ammonoidea |
Aulacostephanus
(Aulacostephanus)
fallax Ziegler |
Old: |
Mollusca: Ammonoidea |
Aulacostephanus sp nov aff anglicus (Steuer) evallidus Lamplugh, pars |
Locality : |
Speeton - North Yorkshire. |
Grid Reference : |
Available from curator
|
Country : |
England |
1:50K map : |
55 |
|
Chronostratigraphy : |
Kimmeridgian Age
— Kimmeridgian Age
|
Lithostratigraphy : |
KIMMERIDGE CLAY FORMATION |
Collector / Donor : |
Available from curator
|
References : |
Arkell, WJ. 1933 Jurassic System |
Ziegler 1962 Palaeontographica 119A |
Arkell, WJ. 1906 1908 Proc Yorks Geol Soc. 16 |