Nat. Hist. [f. SYN- + TYPE sb. 8 b.] Any one of the original set of specimens from which a species has been described and named.

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1909.  Cent. Dict., Suppl.

2

1912.  Return Brit. Museum, 172. Echinoids, Asteroids, Ophinoids, and Crinoids … including the syntypes of Millericrinus charpyi and other specimens.

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1918.  Museums Jrnl., XVII. 112. A brachiopod found at 13,500 feet above sea level…. The syntypes of this are in the Peabody Museum of Yale University.

4