Granulohyalichnus McLoughlin, Furnes, Banerjee, Muehlenbachs, et Staudigel, 2009

Microboring; substrate siliceous; tracemaker bacterium

Diagnosis. Spherical structures found along fractures, on vesicle walls and around the margins of volcanic glass fragments. Occur as isolated granules, or irregular clusters of granules that can coalesce to form bands of granular textures.

Category of architectural design: 2.64. Globular to spherical borings.

Unbranched, spheroidal