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. 2018 Aug 15;68(10):760–770. doi: 10.1093/biosci/biy084

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© The Author(s) 2018. Published by Oxford University Press on behalf of the American Institute of Biological Sciences.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 2. — Modern and ancient representatives of living fossils Triops, Ginkgo, and xiphosurans. (a) Triops cancriformis, recent, Hampshire, England (photograph: Roger Key). (b) T. cancriformis, Hassberge Fm., Triassic, Germany (PASS-074b; photograph: Klaus-Peter Kelber). (c) Ginkgo biloba leaf, recent. (d) G. cranei leaf, Sentinel Butte Fm., Paleocene, North Dakota (Field Museum FMNH pp34024). (e) Tachypleus, recent, Singapore (Yale University YPM IZ 055578). (f) Mesolimulus, Solnhofen Limestone, Late Jurassic, Germany (Yale University YPM IP 9011; both photographs: James Lamsdell).