Figure 1
From: Brittle-star mass occurrence on a Late Cretaceous methane seep from South Dakota, USA

Site map of the ophiuroid-yielding seep site (AMNH locality 3509A) showing the location of the fossil ophiuroids, with three individuals near the large micritic body and a brittle-star mass aggregation (dubbed ‘brittle star village’) at some distance of it. The seep site is covered with seep associated carbonate concretions across the entire map area except for the ravine. Map courtesy of Jamie Brezina.