Zoophycos

Zoophycos is a complex burrow with stacked tiers, in which the tiers are made of spreiten-adorned lobes that radiate outward from a central tube in a downward spiral to form a shape that looks something like a Christmas tree in three-dimensions. Each lobe contains a peripheral tube, with spreiten loops between the tubes. The spreite in map view have "rooster tail" patterns that spiral out from a central point. By contrast, the spreite in cross-section view may be arranged in parallel trains, in which each train resembles an individual Rhizocorallium burrow. Zoophycos characterizes outer shelf (Neritic) environments, and it is often found in close association with Chondrites burrows.