Note on the gut preserved in the Lower Cambrian Lingulellotreta (Lingulata, Brachiopoda) from southern China
作者： Zhifei Zhang , Jian Han , Xingliang Zhang , Jianni Liu , Junfeng Guo
DOI: 10.1111/J.1463-6395.2007.00252.X
关键词: Southern china 、 Anatomy 、 Lagerstätte 、 Lingulata 、 Distended stomach 、 Taxon 、 Foramen 、 Anatomical knowledge 、 Biology 、 Frequency of occurrence
摘要: Lingulellotreta malongensis Rong is the earliest known taxon of family Lingulellotretidae, which characterized by presence a pedicle foramen as well an internal tube. New material from Early Cambrian Chengjiang Lagerstatte southern China provides improved anatomical knowledge for lingulellotretid species especially digestive system. Additional gut fossils exhibit distinctly anterior portion composed esophagus and distended stomach, situated in alleged visceral cavity, with recurved intestine accommodated inside hollow pseudointerarea. The frequency occurrence this intestinal layout suggests that not just artefact preservation. gross configuration guts way they are preserved suggest situ and, therefore, we can assume had cavity presumably subtended pseuodelthyrium, was invaded occupied organs. Hence, these demonstrate dangers extrapolating crown-group soft-tissue to stem group.
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