Prionocyclus wyomingensis, ammonite Argentinosaurus the skull lacked the massive

the skull lacked the massive jaw muscle features characteristic of robust australopithecines

A nearby volcano blast killed and buried the inhabitants of the lake in a 4

Found in 1877 in German's Solnhofen Limestone

Locality: Lance Formation

Prionocyclus wyomingensis, ammonite Argentinosaurus the skull lacked the massivePrionocyclus was a cephalopod. Cephalopods are the most highly developed of the mollusks. They were carnivorous and at the top of the mollusk food chain. They possessed a distinct, well defined head and a circlet of eight or more arms. They used a funnel like opening, called a hyponome, to eject water through, in order to propel themselves backwards or for turning side to side. They are fairly common as fossils and are used as index fossils to