登入選單

返回Google圖書搜尋

Phylogeny, Speciation, and Palaeoecology of the Early Carboniferous (Mississippian) Conodont Genus Mestognathus

Peter H. Von BitterCharles Albert SandbergM. J. Orchard

出版	Royal Ontario Museum, 1986
主題	Nature / FossilsScience / Paleontology
ISBN	08885431909780888543196
URL	http://books.google.com.hk/books?id=7Y0iAQAAIAAJ&hl=&source=gbs_api

註釋

Mestognathus, an important Early Carboniferous conodont genus whose appearance has generally been thought to coincide with, and define, the base of the Visean, evolved from Clydagnathus during the Tournaisian and ranges from that stage into the Namurian. Five species, including M. harmalai sp. nov. and M. praebeckmanni sp. nov. , are distinguished by the gradual phyletic development of the parapet, the fixed blade, the anterior notch, the position of the carinal deflection, and the increasing tendency to evert the basal cavity. Mestognathus dhuensis and M. neddensis are demonstrated to be synonyms of M. beckmanni, M. bipluti, or Mestognathus spp.