Carpenter, F. M. (1930). "The fossil ants of North America"(PDF). Bulletin of the Museum of Comparative Zoology. 70: 1–66. Archived(PDF) from the original on 2024-03-01.
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Ksepka, D.T.; Clarke, J.A. (2009). "Affinities of Palaeospiza bella and the phylogeny and biogeography of mousebirds (Coliiformes)". The Auk. 126 (2): 245–259. doi:10.1525/auk.2009.07178. S2CID85597698.
Worley-Georg, M.P.; Eberle, J.J. (2006). "Additions to the Chadronian mammalian fauna, Florissant Formation, Florissant Fossil Beds National Monument, Colorado". Journal of Vertebrate Paleontology. 26 (3): 685–696. doi:10.1671/0272-4634(2006)26[685:ATTCMF]2.0.CO;2. S2CID131484415.
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Carpenter, F. M. (1930). "The fossil ants of North America"(PDF). Bulletin of the Museum of Comparative Zoology. 70: 1–66. Archived(PDF) from the original on 2024-03-01.