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Full-Text Articles in Physical Sciences and Mathematics
A Redescription Of The Ichnospecies Koreanaornis Anhuiensis (Aves) From The Lower Cretaceous Qiuzhuang Formation At Mingguang City, Anhui Province, China, Li-Da Xing, Yuan-Chao Hu, Jian-Dong Huang, Qing He, Martin G. Lockley, Michael E. Burns, Jun Fang
A Redescription Of The Ichnospecies Koreanaornis Anhuiensis (Aves) From The Lower Cretaceous Qiuzhuang Formation At Mingguang City, Anhui Province, China, Li-Da Xing, Yuan-Chao Hu, Jian-Dong Huang, Qing He, Martin G. Lockley, Michael E. Burns, Jun Fang
Research, Publications & Creative Work
The Cretaceous bird trackway originally labeled Aquatilavipes anhuiensis, in 1994, had previously been examined, photographed and replicated, but never described or illustrated in detail. However, it has been part of a widening discussion about the distribution of Aquatilavipes and Koreanaornis in China (and Korea). Here we illustrate and formally describe the holotype in detail and assign it to Koreanaornis (Koreanaornis anhuiensis) as informally proposed by previous authors. We also demonstrate that most authenticated reports of Koreanaornis, including the Anhui occurrence, are from the Lower Cretaceous, not from the Upper Cretaceous as previously reported.
Inquiry-Based Laboratory Experiences Using Ecosystem Microcosms, Roger Sauterer
Inquiry-Based Laboratory Experiences Using Ecosystem Microcosms, Roger Sauterer
Research, Publications & Creative Work
Self-sustaining ecosystem microcosms, called ecosystem jars, can easily be collected from local ponds, streams, or lakes. Sealed and exposed to sunlight, these miniature ecosystems can sustain themselves for a decade or more. Unlike Winogradsky columns, ecosystem jars are optimized for protist, animal, and plant observations and experiments, and are not altered by addition of sulfur, carbon, or cellulose sources, more accurately representing natural ecosystems. Ecosystem jars can support a variety of inquiry-based experiments, including student-designed projects, from middle school to college levels. Students, with instructor assistance, formulate hypotheses, design experiments, observe and catalog organisms by microscopy, then record their data …