biostromes
/ˈbaɪoʊˌstroʊmz/
noun
- Plural of biostrome; layered rock formations made from the remains of marine organisms.
- Biostromes can be found in many parts of the world where shallow seas once existed.
- The region is known for its ancient biostromes, which are rich in fossilized coral.
- The park's geology features several biostromes that date back to the Devonian period.