Ellesmerocerida

From Palaeos.org

Jump to: navigation, search
m (Post Gasconadian Expansion: linked Cyrtocerinidae to Cyrtocerinina)
m (Gasconadian Recovery: typo)
 
Line 26: Line 26:
Later in the Gasconadian additional modifications showed up, mainly in the aperture which in some, such as the endgastirc ''Barnseoceras'' and ''Buehleroceras'' became constricted. Other developments include the broad grooves that run along the flanks of ''Oneotoceras''.
Later in the Gasconadian additional modifications showed up, mainly in the aperture which in some, such as the endgastirc ''Barnseoceras'' and ''Buehleroceras'' became constricted. Other developments include the broad grooves that run along the flanks of ''Oneotoceras''.
-
Also from the Gasconadian are the ellesmeroceratid ''Pachendocera'' which gave rise to the [[Endocerida]] through ''Proendoceras'' and ''Bassleroceras'' which belongs in the Bassleroceratidae and which gave irse to the [[Tarphycerida]]  
+
Also from the Gasconadian are the ellesmeroceratid ''Pachendocera'' which gave rise to the [[Endocerida]] through ''Proendoceras'' and ''Bassleroceras'' which belongs in the Bassleroceratidae and which gave rise to the [[Tarphycerida]]
-
+
== Post Gasconadian Expansion==
== Post Gasconadian Expansion==

Latest revision as of 22:30, 20 January 2009

Personal tools