It has also been claimed that Ediacaran fossils were lichens,[79] though this claim is controversial.[80] Additional evidence has been marshalled for a lichen interpretation of Dickinsonia.[78] Lichen-like fossils consisting of coccoid cells and thin filaments, preserved in marine phosphorite of the Doushantuo Formation in southern China. These fossils are thought to be 551 to 635 million years old (belonging to the Neoproterozoic era).[81] Discovery of these fossils suggest that fungi developed symbiotic partnerships with photoautotrophs long before the evolution of vascular plants. Winfrenatia, an early zygomycetous lichen symbiosis that may have involved controlled parasitism, is an impression found in Scotland, belonging to the early Devonian times.[82] There are also several examples of fossilized lichens embedded in amber. The fossilized Anzia is found in pieces of amber in northern Europe and dates back approximately 40 million years.[83] Fossilized Lobaria comes from Trinity County in northern California, USA and dates back to the early to middle Miocene.[84]