Oldhamia

Oldhamia is an ichnogenus describing burrows produced by worm-like organisms mining underneath microbial mats. It was common from the Early Cambrian deep-water deposits.
The Ediacaran species "Oldhamia recta" are body fossils of a rod-like organism, rather than ichnofossils.
The Ordovician "Oldhamia pinnata" and Carboniferous-Permian "Oldhamia fimbriata" were mentioned without any ichnotaxonomical formalization, and therefore are "nomina nuda".
It was named after the geologist Thomas Oldham.