caa a22 4500 38801749X CHVBK 20180307124915.0 cr unu---uuuuu 161130e199801 xx s 000 0 eng 10.1017/S0022336000024033 doi S0022336000024033 pii (NATIONALLICENCE)cambridge-10.1017/S0022336000024033 Early Cretaceous arthropods from the Tlayúa Formation at Tepexi de Rodríguez, Puebla, México [Elektronische Daten] [Rodney M. Feldmann, Francisco J. Vega, Shelton P. Applegate, Gale A. Bishop] The arthropod macrofauna from the Middle Member of the lithographic limestones of the Tlayúa Formation, in quarries at Tepexi, México, is comprised of marine and nonmarine components. Marine taxa include a new species of flabelliferid isopod, a new genus and species of an anomuran, and a new genus and species of a brachyuran crab. Remains of an arachnid and an odonate nymph represent nonmarine constituents. Previous paleoenvironmental interpretations of a restricted lagoon, with periodic episodes of marine and freshwater influences are consistent with the nature of the arthropod fauna. Isopod remains, represented only by corpses, that resemble modern ectoparasites of fishes suggest that they are directly associated with the abundant fish remains found in the quarries, either as ectoparasites that released their hosts before they died or possibly as scavengers that fed on fish remains. The next most abundant arthropods are the crabs, most of which are corpses, suggesting that this group lived in or very near to the depositional site of the Tlayúa Formation. Based upon the new fossil material, the stratigraphic range for the Aeglidae has been extended to span Albian to Holocene time. Extant representatives of this family inhabit fresh water environments of South America. Copyright © The Paleontological Society Feldmann Rodney M. Department of Geology, Kent State University, Kent, Ohio 44242 aut Vega Francisco J. Instituto de Geología, UNAM, Ciudad Universitaria, Coyoacán, México D. F. 04510, México aut Applegate Shelton P. Instituto de Geología, UNAM, Ciudad Universitaria, Coyoacán, México D. F. 04510, México aut Bishop Gale A. Department of Geology and Geography, Georgia Southern University, Statesboro, 30460 aut Journal of Paleontology Cambridge University Press 72/1(1998-01), 79-90 0022-3360 72:1<79 1998 72 JPA https://doi.org/10.1017/S0022336000024033 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022336000024033 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Feldmann Rodney M. Department of Geology, Kent State University, Kent, Ohio 44242 aut NATIONALLICENCE 700 1- Vega Francisco J. Instituto de Geología, UNAM, Ciudad Universitaria, Coyoacán, México D. F. 04510, México aut NATIONALLICENCE 700 1- Applegate Shelton P. Instituto de Geología, UNAM, Ciudad Universitaria, Coyoacán, México D. F. 04510, México aut NATIONALLICENCE 700 1- Bishop Gale A. Department of Geology and Geography, Georgia Southern University, Statesboro, 30460 aut NATIONALLICENCE 773 0- Journal of Paleontology Cambridge University Press 72/1(1998-01), 79-90 0022-3360 72:1<79 1998 72 JPA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge