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The second North American fossil horntail wood-wasp (Hymenoptera: Siricidae), from the early Eocene Green River Formation

Abstract : Eoteredon lacoi gen. et sp. nov., is described from the early Eocene Green River Formation in Wyoming, the second fossil siricid genus and species described from North America. We propose Eoteredon as sister to the genus Teredon, whose sole species is one of the rarest of extant Siricidae. The majority of siricids today inhabit temperate Northern Hemisphere forests; Teredon cubensis, however, is one of its few species that live in megathermal tropical lowlands. The Eocene forest that Eoteredon inhabited had a mesothermal to megathermal climate. We place Eoteredon in the context of broad Cenozoic climate change.
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S. Bruce Archibald, Arvid Aase, André Nel. The second North American fossil horntail wood-wasp (Hymenoptera: Siricidae), from the early Eocene Green River Formation. Zootaxa, Magnolia Press, 2021, 4999 (4), pp.325 - 334. ⟨10.11646/zootaxa.4999.4.2⟩. ⟨hal-03335847⟩

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