B. Gudveig Baarli (2020). "Survival and recovery atrypid fauna following the terminal Ordovician extinction, the Atrypinae: central Oslo Region, Norway". Historical Biology: An International Journal of Paleobiology. 33 (3): 403–440. doi:10.1080/08912963.2019.1620228. S2CID198270478.
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B. Gudveig Baarli (2020). "Survival and recovery atrypid fauna following the terminal Ordovician extinction, the Atrypinae: central Oslo Region, Norway". Historical Biology: An International Journal of Paleobiology. 33 (3): 403–440. doi:10.1080/08912963.2019.1620228. S2CID198270478.