they hail from Lias Group rocks, likely from either the Planorbis Zone or the Pre-planorbis Zone of the Waterloo Mudstone Formation. Along with specimens...

they hail from Lias Group rocks, likely from either the Planorbis Zone or the Pre-planorbis Zone of the Waterloo Mudstone Formation. The specimens include...

type species of the genus Hippeutis. The species is found in the Palearctic zone, including Europe. Latvia Czech Republic - least concern (LC) Slovakia Poland...

the first occurrence of Psiloceras planorbis ammonoid zone (pre-Planorbis beds), in the Psiloceras tilmanni Zone that immediately follows the Triassic-Jurassic...

biozones in the Tethys domain: zone of Schlotheimia angulata zone of Alsatites liasicus zone of Psiloceras planorbis Triassic-Jurassic extinction event...

referred to as the "Pre-planorbis beds" in reference them being deposited before the first appearance of the ammonite Psiloceras planorbis. In certain restricted...

allies. Biomphalaria is the type genus of the tribe Biomphalariini. Both Planorbis and Taphius are synonyms for Biomphalaria. The shell of this species,...

Middle Purbeck. The fresh-water mollusca include Viviparus (Paludina), Planorbis, Melanopsis, Unio, Cyrena. A large number of insect genera has been found...

Jurassic was previously defined as the first appearance of Psiloceras planorbis by Albert Oppel in 1856–58, but this was changed as the appearance was...

environments.: 378  Fossils include freshwater gastropod species like Planorbis and Limnea found in mudstone and claystone deposits, and vertebrates like...