Final answer:
Nautiloids are typically found in marine limestone, and within the given options, the Redwall Limestone is the correct one as it contains a significant record of marine fossils including nautiloids.
Step-by-step explanation:
Nautiloid fossils can often be found in limestone layers due to their marine origin. Among the options provided, the Redwall Limestone is known to contain various marine fossils, including nautiloids. The Redwall Limestone has a rich fossil record and is one of the many Paleozoic sedimentary rock formations that contain marine fossils. While the Coconino Sandstone is more associated with cross-bedding and does not contain many fossils, the Redwall Limestone is better known for its abundance of marine life fossils, including nautiloids.
The Redwall Limestone is part of the layered Paleozoic rocks and is known for its rich fossil record. It is a light-colored limestone that contains fossil fish, including nautiloids. Nautiloids are a type of cephalopod that lived during the Paleozoic era and are characterized by their spiral-shaped shells.