Often very fossiliferous. Sedimentary textures and fossil occurrences are identical to those seen in Racine mounds, but typically the fauna (e.g., brachiopods, corals, echinoderms) is much less diverse. Local graded bedding, debris wedges, and mound fissures packed with trilobites or nautiloids (forming very local trilobite-moldic and nautiloid-moldic dolowackestones-packstones) are common.
Collection entered by Foote.