goniatites उदाहरण वाक्य

Goniatites are found in North America, Europe, North Africa and Australasia where they are used as index fossils in age determination and stratigraphic correlation.
During the Late Cretaceous and Early Tertiary, the Hercoglossidae and Aturiidae again developed sutures like those of Devonian goniatites . ( Teichert 1988, pp . 43 44)
"' Raymondiceratinae "'is a subfamily of Upper Devonian cheiloceratid goniatites in which the sutures have 4 distinct lobes and the growth lines are convex.
Goniatites ( goniatitida ) survived the Late Devonian extinction to flourish during the Carboniferous and Permian only to become extinct at the end of the Permian some 139 million years later.
The ammonoids ( a group which includes the ammonites and the goniatites ) are extinct cousins of the nautiloids that evolved early in the Devonian period, some 400 million years ago.

"' Goniatids "', informally Goniatites, are ammonoid cephalopods that form the Order "'Goniatiida "', derived from the more primitive Anarcestida during the Middle Devonian some 390 million years ago.
The natural stone is deep cherry-red in colour ( Griotte is a French word meaning a Morello cherry ), often flecked with small dashes of purple and / or spots and streaks of white formed by Goniatites or by later cementation.
Jackson s study of the geological succession below the Kinder Scout grit, in which he demonstrated the presence of the Namurian Zones by their content of fossil " Goniatites ", was acknowledged by as an important contribution to Carboniferous stratigraphy.
The "'Permoceratidae "', Permian offshoots named by Miller and Collinson in 1953 for the genus " Permoceras ", are involute, smooth, with a compressed, higher than wide, whorl section, ventrally subcentral siphuncle, and a suture with a deep, narrow, pointed ventral lobe and large pointed lateral lobes, mimicking contemporary goniatites.
"Agathiceras " is thought to be derived from " Proshumardites " according to Saunders " et al " . ( 1999 ), which is thought to be derived from " Dombaties "; all of which are included in the Agathiceratidae . " Dombarites " is presumed to have its origin in " Goniatites ", type genus of the Goniatitidae