. . . "Oldhamia is an ichnogenus describing burrows produced by organisms mining underneath microbial mats. It was common from the Ediacaran into the Cambrian, when it was forced into progressively deeper waters to avoid the increasing predation. It was named after the British geologist Thomas Oldham."@en . . "Oldhamia is an ichnogenus describing burrows produced by organisms mining underneath microbial mats. It was common from the Ediacaran into the Cambrian, when it was forced into progressively deeper waters to avoid the increasing predation. It was named after the British geologist Thomas Oldham."@en . "Oldhamia"@en .