Which type of fossil is NOT found in Niagara Cave?

Ammonites are a specific group of marine mollusks that are well-known as fossils prevalent in many geological formations, especially those that date back to the Mesozoic era. However, ammonites are typically not found in the rock layers associated with Niagara Cave, which predominantly features fossils from different periods, particularly from the Paleozoic era.

In contrast, the other types of fossils listed—gastropods, cephalopods, and trilobites—are commonly associated with the limestone and other sedimentary rocks that compose Niagara Cave. These fossils represent a variety of ancient marine life that thrived in the shallow seas that covered the area millions of years ago. The absence of ammonite fossils in Niagara Cave contributes to the unique paleontological profile of the site, which showcases different life forms and environmental conditions than those where ammonites were more prevalent.