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. 2017 Sep 20;3(9):e1701362. doi: 10.1126/sciadv.1701362

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Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 4 — Latitudinal trends plotted by temperature for inorganic content (shell size) and shell cost in (A) gastropods and (B) bivalves. For gastropods (A), numbers represent species: (1) Phos senticosus (tropical), (2) Pollia fumosa (tropical), (3) Cominella lineolata (warm-temperate), (4) Buccinum undatum (cool-temperate), (5) B. glaciale (polar, Arctic), (6) B. cf. groenlandicum (polar, Artic), and (7) Neobuccinum eatoni (polar, Antarctic). For bivalves (B), numbers represent species: (1) Laternula boschasina (tropical), (2) L. truncata (tropical), (3) L. recta (temperate), and (4) L. elliptica (polar). Data are means ± 1 SE.