caa a22 4500 388017767 CHVBK 20180307124915.0 cr unu---uuuuu 161130e199805 xx s 000 0 eng 10.1017/S0022336000024252 doi S0022336000024252 pii (NATIONALLICENCE)cambridge-10.1017/S0022336000024252 Chaoborus Lichtenstein (Diptera: Chaoboridae) pupae from the middle Eocene of Mississippi [Elektronische Daten] [John E. Johnston, Art Borkent] Pupae of the nonbiting midge Chaoborus are reported from the middle Eocene (Claibornian) Tallahatta Formation in Benton County, Mississippi. These pupae are placed within the genus Chaoborus because the shape of the respiratory organs, length of the abdomen, and shape of the anal paddles closely resemble other species of this extant genus. This occurrence represents the oldest record of Chaoborus pupae and the first record of fossil Chaoborus from North America. The flora and fauna found associated with the fossil pupae along with the known habitats of extant Chaoborus pupae indicate a lentic environment. This interpretation corresponds to the depositional environment of similar Eocene-aged clay deposits in western Tennessee. Copyright © The Paleontological Society Johnston John E. 680 Manor Ridge Drive, Mableton, Georgia 30126 U.S.A. aut Borkent Art 1171 Mallory Road, R1-S20-C43, Enderby, British Columbia V0E 1V0 Canada aut Journal of Paleontology Cambridge University Press 72/3(1998-05), 491-493 0022-3360 72:3<491 1998 72 JPA https://doi.org/10.1017/S0022336000024252 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022336000024252 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Johnston John E. 680 Manor Ridge Drive, Mableton, Georgia 30126 U.S.A aut NATIONALLICENCE 700 1- Borkent Art 1171 Mallory Road, R1-S20-C43, Enderby, British Columbia V0E 1V0 Canada aut NATIONALLICENCE 773 0- Journal of Paleontology Cambridge University Press 72/3(1998-05), 491-493 0022-3360 72:3<491 1998 72 JPA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge