搜索结果: 1-4 共查到“地质学 Chondrichthyes”相关记录4条 . 查询时间(0.062 秒)
Karksilepis parva gen.et sp.nov.(Chondrichthyes)from the Burtnieki Regional Stage,Middle Devonian of Estonia
Chondrichthyes Burtnieki Regional Stage Middle Devonian Estonia
2009/10/21
Dermal scales of a new chondrichthyan were discovered in four levels in sandstones of the Härma Beds (lower part of the Burtnieki Regional Stage, Middle Devonian) in the Karksi outcrop of South E...
Jaws and dentition in an Early Triassic,3-dimensionally preserved eugeneodontid skull(Chondrichthyes)
Neutron scan Oral dentition Skull Jaws Eugeneodontid Early Triassic
2009/10/20
Neutron scans of a concretion with a 3-dimensionally preserved partial skull from the Lower Triassic Vega Phroso Siltstone Member of the Sulphur Mountain Formation (western Canada), previously assigne...
Some observations on Denaea fournieri (Chondrichthyes,Symmoriiformes) from the Lower Carboniferous of Belgium
Denaea Symmoriiformes Chondrichthyes Lower Carboniferous
2009/10/20
Preliminary observations are presented concerning endoskeletal morphology in the Lower Carboniferous symmoriiform shark Denaea fournieri, and some problems in the original description are highlighted....
Protodus jexi Woodward,1892 (Chondrichthyes),from the Lower Devonian Campbellton Formation,New Brunswick,Canada
Early gnathostomes Early chondrichthyans Protodus Teeth Early Devonian
2009/10/20
Protodus jexi from the early Emsian ‘Atholville beds’, Campbellton Formation between Atholville and Campbellton,northern New Brunswick, Canada, is redescribed from material studied by R. H. Traquair a...
