搜索结果: 1-12 共查到“古生物学 Ordovician”相关记录12条 . 查询时间(0.167 秒)
Lower Ordovician Leetse Formation in the North Estonian Klint area
Leetse Formation conodont biozonation grain-size data glauconite mineralogy
font style='font-size:12px;'>
2009/10/21
Sequences of the Leetse Formation were studied in order to find out the conodont biozonation, grain-size distribution, and glauconite mineral properties and their variations along the North Estonian K...
The Early Ordovician trilobite distribution and zonation of the East Baltic
trilobites biozonation Hunneberg Billingen Lower Ordovician Baltoscandia
font style='font-size:12px;'>
2009/10/21
Biozones of the East Baltic Early Ordovician trilobites were studied based on the trilobite distribution in northwestern Russia, Estonia, and Sweden. New data on trilobite distribution reveal the diac...
A new chitinozoan species from the Upper Ordovician of the East Baltic
chitinozoans Upper Ordovician Baltica Avalonia
font style='font-size:12px;'>
2009/10/21
A new species Conochitina rugata, earlier treated as nomen nudum, is formally defined. The species has been identified in the upper part of the Pirgu Stage in many East Baltic sections of the Baltica ...
Recent developments in the Upper Ordovician and lower Silurian conodont biostratigraphy in Estonia
conodonts biostratigraphy Upper Ordovician Llandovery Wenlock Estonia
font style='font-size:12px;'>
2009/10/21
The current state of and the latest developments in the conodont-based biostratigraphical studies of Upper Ordovician and lower Silurian strata in Estonia are discussed. An updated conodont zonation i...
Platystrophia (Orthida) and new related Ordovician and Early Silurian brachiopod genera
Rhynchonelliformea Platystrophiidae Baltica Avalonia Laurentia new taxa
font style='font-size:12px;'>
2009/10/21
More than 150 Ordovician and Early Silurian brachiopod species have been assigned to the genus Platystrophia King,1850 mainly on the basis of their Spirifer-like shell exteriors. King’s concept o...
Cornulitid epibionts on brachiopod shells from the Late Ordovician(middle Ashgill) of East China
cornulitids brachiopods Ordovician South China
font style='font-size:12px;'>
2009/10/21
This is the first record of Cornulites sp. as an epibiont on brachiopods from the middle Ashgill, Late Ordovician, of the South China Palaeoplate. Twenty-one cornulitid specimens were found attached t...
Hulterstad brachiopods and associated faunas in the Vormsi Stage (Upper Ordovician,Katian) of the Lelle core,Central Estonia
Hulterstad brachiopods chitinozoans scolecodonts Vormsi Stage Ordovician Estonia
font style='font-size:12px;'>
2009/10/21
Integrated palaeontological and sedimentological study of the Upper Ordovician Vormsi Stage in the Lelle drill core section, Central Estonia, revealed an association of shelly fauna containing the end...
Conodont biostratigraphy in the Middle-Upper Ordovician boundary beds of Estonia
conodonts correlation biostratigraphy Ordovician Estonia
font style='font-size:12px;'>
2009/10/21
Conodonts of the uppermost Uhaku, the Kukruse, and the lower Haljala stages (uppermost Darriwilian and lower Sandbian) of Estonia are discussed. The distribution of conodonts within the Pygodus serra,...
Kaljoprion-a new enigmatic jawed polychaete genus from the Upper Ordovician of Estonia
scolecodonts jawed polychaetes taxonomy convergent evolution Late Ordovician
font style='font-size:12px;'>
2009/10/21
A new Late Ordovician polychaete genus Kaljoprion, with K. laevaensis gen. et sp. nov. as the type species, is described from the Nabala Regional Stage of the Laeva-18 drill core, central Estonia. The...
Ordovician sponges (Porifera) and other silicifications from Baltica in Neogene and Pleistocene fluvial deposits of the Netherlands and northern Germany
Baltica Eridanos River erratics Ordovician Porifera silicifications
font style='font-size:12px;'>
2009/10/21
Fluvial deposits of Miocene to Early Pleistocene age in Germany and the Netherlands were laid down in the delta of the Eridanos River System, but the exact provenance of this material continues to be ...
Distribution of the order Proetida (Trilobita) in Baltoscandian Ordovician strata
Ordovician Baltoscandia geschiebe Trilobita Proetida distribution
font style='font-size:12px;'>
2009/10/21
The trilobite order Proetida forms a minor but important faunal element within the Ordovician strata of Baltoscandia.This review follows the current systematic, taxonomic, and stratigraphical usage an...
Advances in the Ordovician graptolite biostratigraphy of the St Petersburg area,Russia
Ordovician graptolites biostratigraphy St Petersburg area
font style='font-size:12px;'>
2009/10/21
The Ordovician shallow-water shelf deposits rich in benthic fauna are exposed along the Russian part of the Baltic– Ladoga Klint. Graptolites occur only at some stratigraphic levels, being compar...