|mhorn||Дата: Saturday, 13.10.2012, 19:55 | Сообщение # 1|
|Nalnjaeva T.I., Basov V.A., Meledina S.V. (2011) Jurassic and Lower Cretaceous stratigraphy and belemnites of Western Spitsbergen (Svalbard) // News of Palaeontology and Stratigraphy Issue 16-17. (supplement to Russian Geology and Geophysics, Vol.52). P.109-129. [in Russian] |
This paper deals with description of Jurassic and Lower Cretaceous sections of Western Spitsbergen, identiﬁ cation and photographs of belemnites. The majority of belemnites was assigned to family Cylindroteuthididae,
with rare Passaloteuthididae (Nannobelinae, Passaloteuthidinae) and Megateuthididae. The established belemnite assemblages are characteristic for stages and substages and comprise species and genera common with Siberia.
Most signiﬁ cant assemblages were recovered from Upper Oxfordian, Lower and Upper Kimmeridgian, Lower–Middle Volgian, Lower Valanginian, Upper Valanginian–Lower Hauterivian and Upper Hauterivian. Rare specimens were found in Toarican, Upper Bathonian, ?Lower Oxfordian, Boreal Berriassian (Ryazanian)
Middle Jurassic - Lower Cretaceous ammonites & aptychi