[2] Other fossils include bony fish, hybodont sharks, and invertebrates with ceratitid ammonoids being especially abundant.

In the latter half of the 20th century, the section of Fossil Hill Member outcropping in the Augusta Mountains was identified for its ammonoid record to be used in biostratigraphic definition and correlation of Triassic rocks.

Although differing in precise age, the strata assigned to this member form a laterally uniform unit of offshore calcareous rocks.

The various occurrences of the Fossil Hill member are also united by a distinct pelagic Anisian paleofauna preserved in the rocks.

In the China Mountain and Tobin Range sections, erosion and dolomitization from overlying units have rendered the Fossil Hill usually thin or locally absent.

Specific bioclastic beds dominated by Daonella fossils occur at multiple intervals within the shaley limestones.