lithodome

Example:The beach was dotted with numerous mollusk formations, indicating a thriving marine ecosystem.

Definition:Any structure or shape created by the activity of mollusks, which can include burrows, feeding beds, and other related features.

Example:The sedimentary mound was a prime location for marine biologists to study the effects of erosion and deposition.

Definition:A mound of sediment that has been formed through natural processes, such as the accumulation of sediments and the activities of burrowing organisms.