Fraiser, Margaret L.

Unique microgastropod biofacies in the Early Triassic: indicator of long-term biotic stress and the pattern of biotic recovery after the end-Permian mass extinction - Paris Académie des Sciences|Elsevier Septembre-Octobre 2005 - pp. 475-484 ilus.


BIOFACIES
EXTINCION MASIVA
GASTROPODA
PERMICO SUPERIOR
TRIASICO INFERIOR