Problematic calcispheres from the Upper Muschelkalk (Middle Triassic) of eastern France as producers of calcisiltite and micrite in shallow-water limestones

PalZ ◽  
1998 ◽  
Vol 72 (1-2) ◽  
pp. 31-39 ◽  
Author(s):  
Adam Vecsei ◽  
Philippe Duringer
Keyword(s):  
Shallow Water ◽  
Middle Triassic ◽  
Upper Muschelkalk

Syzygial brachials from the upper Muschelkalk (Middle Triassic, Ladinian) of Poland and their implication for an early origin of comatulid crinoids

2008 ◽  
Vol 82 (3) ◽  
pp. 634-637 ◽  
Author(s):  
Mariusz A. Salamon ◽  
Michat Zatoń ◽  
Przemysław Gorzelak
Keyword(s):  
Middle Triassic ◽  
Upper Muschelkalk ◽  
Early Origin ◽  
Irregular Arrangement

According to Ubaghs (1978), syzygies are brachial articulations in which radiating ridges and furrows on the two joint faces oppose each other rather than interlock as in symplexies. Cryptosyzygies differ from syzygies by having very short ridges that may be replaced by rows of tubercles or granules, with a tendency toward irregular arrangement and disappearance. Among Triassic crinoids, only representatives of the orders Isocrinida Sieverts-Doreck, 1952 and Comatulida Clark, 1908 had cryptosyzygial or syzygial brachial articulation, respectively. According to Rasmussen (1978), among Isocrinidae the articulations of primibrachial 1 and 2 and secundibrachial 1 and 2 were cryptosyzygial or synarthrial (but see also comments in Simms, 1988a). Among Comatulida, syzygial articulations generally occur between brachials 3 and 4 and in more distal arm parts.

International Commission on Zoological Nomenclature

1997 ◽  
Vol 18 (2) ◽  
pp. 216
Author(s):  
Paul D. Brinkman ◽  
Olivier Rieppel
Keyword(s):  
Middle East ◽  
Type Species ◽  
Middle Triassic ◽  
International Commission ◽  
Zoological Nomenclature ◽  
Lower Upper ◽  
Upper Muschelkalk ◽  
Subjective Synonym

AbstractThe purpose of this application is to conserve the well known generic name Nothosaurus Miinster, 1834 for a genus of sauropterygian reptiles by giving it precedence over the subjective synonym Conchiosaurus Meyer [1833], which predates it by a few months. The genus Nothosaurus is known from the upper Lower to uppermost Middle Triassic of Europe and the Middle East. The type species, N. mirabilis Münster, 1834, was first described on material from the lower Upper Muschelkalk (Late Anisian) at Bayreuth. The genus Conchiosaurus is known from a single incomplete skull from the Saurierkalk of Esperstädt (Germany), which corresponds to the base of the Middle Muschelkalk, Upper Anisian.

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