Dawsonia campanulata

↑ Alex Page (2008). "Ubiquitous Burgess Shale–style “clay templates” in low-grade metamorphic mudrocks". Geology 36: 855.
↑ Alex Page, Philip R. Wilby, Claire J. T. Mellish, Mark Williams & Jan A. Zalasiewicz (2008). "Dawsonia Nicholson: linguliform brachiopods, crustacean tail-pieces and a problematicum rather than graptolite ovarian vesicles". Transactions of the Royal Society of Edinburgh 99: 251–266 .

[1] Alex Page (2008). "Ubiquitous Burgess Shale–style “clay templates” in low-grade metamorphic mudrocks". Geology 36: 855.

[2] Alex Page, Philip R. Wilby, Claire J. T. Mellish, Mark Williams & Jan A. Zalasiewicz (2008). "Dawsonia Nicholson: linguliform brachiopods, crustacean tail-pieces and a problematicum rather than graptolite ovarian vesicles". Transactions of the Royal Society of Edinburgh 99: 251–266 .

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