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Image: Archimollusc-en

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Description: Anatomical diagram of the hypothetical ancestral mollusc (“HAM”). Nervous system is hypoathroid. Unsegmented, bilaterally symmetrical body, organs occur either singly or in pairs (no metamerism), hemocoel circulatory system filled with hemocyanin, gametes ejected into pericardium and travel through nephridia to environment.
Title: Archimollusc-en
Credit: Own work based on a number of other images, including the following[1][2][3][4] ↑ Lindberg, David R. (14 November 2003). "Fact, Theory and Tradition in the Study of Molluscan Origins". PROCEEDINGS OF THE CALIFORNIA ACADEMY OF SCIENCES 54 (27): 663–686. San Francisco, CA: California Academy of Sciences. ↑ (1912) Chambers's Encyclopa︠e︡dia: A Dictionary of Universal Knowledge, Lippincott, p. 260 ↑ Euan Clarkson (17 July 2009) Invertebrate Palaeontology and Evolution, John Wiley & Sons, p. 198 ISBN: 978-1-4443-1332-1. ↑ (January 2003) The Complete Idiot's Guide to the Oceans, Alpha Books, p. 142 ISBN: 978-0-02-864462-2.
Author: KDS444
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes

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