Heer, O. 1864. Die Urwelt der Schweiz. [Lieferungen 7-11.]. Zürich: Friedrich Schulthess, pp. 289-496.

Notes: Publication date from Evenhuis (1994b:504). Ants discussed and illustrated pp. 386-388.

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Heer, O. 1867. Fossile Hymenopteren aus Oeningen und Radoboj. Neue Denkschriften der Allgemeinen Schweizerischen Gesellschaft für die Gesammten Naturwissenschaften 22(4):1-42. PDF
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Heer, O. 1870. Die Miocene Flora und Fauna Spitzbergens. Kongliga Svenska Vetenskaps-Akademiens Handlingar (n.s. 3)8(7):1-98. PDF
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Hespenheide, H. A. 1986. Mimicry of ants of the genus Zacryptocerus (Hymenoptera: Formicidae). Journal of the New York Entomological Society 94:394-408.
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Haldeman, S. S. 1844. Descriptions of insects, presumed to be undescribed. Proceedings of the Academy of Natural Sciences of Philadelphia 2:53-55. PDF

Notes: Published between 30 April 1844 and 21 June 1844. See Nolan (1913).

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Haldeman, S. S. 1849b. On several new Hymenoptera of the genera Ampulex, Sigalphus, Chelonus and Dorylus. Proceedings of the Academy of Natural Sciences of Philadelphia 4:203-204. PDF
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Hansen, L. D.; Klotz, J. H. 2005. Carpenter ants of the United States and Canada. Ithaca, New York: Cornell University Press, xiii + 204 pp.
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Gronenberg, W. 1995. The fast mandible strike in the trap-jaw ant Odontomachus. I. Temporal properties and morphological characteristics. Journal of Comparative Physiology. A. Sensory, Neural and Behavioral Physiology 176:391-398.
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Grundmann, A. W. 1952. A new Brachymyrmex from northern Utah. Journal of the Kansas Entomological Society 25:117. PDF
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