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作者:Spencer G. Lucas , Michael J. Szajna ...
来源:[J].Palaeogeography, Palaeoclimatology, Palaeoecology(IF 2.745), 2020
摘要:Abstract(#br)Few unequivocal Silurian examples of continental ichnofossils have been reported. In eastern Pennsylvania, the upper Silurian Bloomsburg Formation consists of fluvial deposits that have yielded a low-diversity ichnofauna described here. The rarity of reported Siluria...
作者:Asher J. Lichtig , Spencer G. Lucas
来源:[J].Palaeoworld, 2017, Vol.26 (3), pp.581-588
摘要:Abstract(#br)We present a simple method of inferring extinct turtle habitats based on four measurements of the shell (two ratios). These ratios are the maximum width of the carapace to the width of the abdominal-femoral sulcus of the plastron, and the ratio of the carapace l...
作者:Lawrence H. Tanner , Spencer G. Lucas
来源:[J].Sedimentary Geology(IF 1.802), 2018, Vol.373, pp.98-110
摘要:Abstract(#br)The Upper Pennsylvanian to lowermost Permian El Cobre Canyon and Arroyo del Agua formations are well exposed in a 250+ m section in the Chama Basin in northern New Mexico. This is one of the few known successions of fossiliferous red-bed siliciclastic sediments ...
作者:Spencer G. Lucas , Frank Scholze ...
来源:[J].Palaeoworld, 2019
摘要:Abstract(#br)Nonmarine biostratigraphic/biochronologic schemes have been created for all or parts of the late Carboniferous–Middle Triassic using palynomorphs, megafossil plants, conchostracans, blattoid insects, tetrapod footprints and tetrapod body fossils, and these provi...
作者:... Maya Elrick , Viorel Atudorei , Spencer G. Lucas
来源:[J].Palaeogeography, Palaeoclimatology, Palaeoecology(IF 2.745), 2019, Vol.521, pp.42-56
摘要:Abstract(#br)Widespread Lower Triassic microbial carbonates occur after the end-Permian mass extinction (EPME) and are commonly attributed to reduced metazoan competition after the EPME, or to paleoceanographic conditions that suppressed metazoan abundance and increased ocea...
作者:Lorenzo Marchetti , Sebastian Voigt , Spencer G. Lucas
来源:[J].Gondwana Research(IF 7.396), 2019, Vol.73, pp.32-53
摘要:Abstract(#br)The poor preservation and apparent monospecifity of Permian tetrapod footprints from eolian paleoenvironments have thus far hampered their reliable interpretation. This study clarifies how this is due to distinct and repeated ichnotaphonomic effects on trackway ...
作者:Spencer G. Lucas , Heitor Francischini ...
来源:[J].Earth-Science Reviews(IF 7.339), 2019, Vol.190, pp.148-170
摘要:Abstract(#br)The tetrapod footprint record of Permian eolian environments has long been underestimated because of overall poor preservation and its apparent monospecifity. The best known and most abundant Cisuralian record of tetrapod footprints is from the Coconino and De Chelly...
作者:... Ken Cart , John Foster , Spencer G. Lucas
来源:[J].Palaeogeography, Palaeoclimatology, Palaeoecology(IF 2.745), 2018, Vol.491, pp.185-195
摘要:Abstract(#br)Late Triassic and Early Jurassic tetrapod track assemblages are abundant and quite well documented from the respective Chinle and Glen Canyon groups of the Dolores Valley region of western Colorado and adjacent regions, especially eastern Utah. However, gaps sti...
作者:Spencer G. Lucas , Gary S. Morgan ...
来源:[J].Quaternary International(IF 1.962), 2016
摘要:Abstract(#br)In North America, some of the most complete and well-dated records of primitive mammoths are from lower Pleistocene deposits in the Rio Grande rift of central and southern New Mexico. The oldest of these mammoths are early Irvingtonian in age (1.3–1.4 Ma) and ar...
作者:Spencer G. Lucas , Lawrence Tanner ...
来源:[J].Palaeogeography, Palaeoclimatology, Palaeoecology(IF 2.745), 2015, Vol.424, pp.91-110
摘要:Abstract(#br)Natural molds of 165 stems were found in life position in a 1 m-thick sandstone bed, lower Permian (Wolfcampian), Sangre de Cristo Formation, northern New Mexico. The sandstone represents a single flood event of a river sourced in the Ancestral Rocky Mountains. ...

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