Invertebrate paleontology

Discoceras, p K360 in Vol K of the Treatise on Invertebrate Paleontology（英语：Treatise on Invertebrate Paleontology） in the section on the Trocholitidae, pp K359-K362

Treatise on Invertebrate Paleontology, Part H, Brachiopoda Revised. [2013-03-06]. （原始内容存档于2020-02-16）.  Treatise on Invertebrate Paleontology, Part H, Brachiopoda

古無脊椎動物論文（英语：Treatise on Invertebrate Paleontology）（Treatise on Invertebrate Paleontology）描述優原穴鱟有「小型楔形心臟裂片，藉由不同的軸相接，環紋腹盾與突起的尾端。」 Euproops

Part H, Brachiopoda (Revised). Treatise on Invertebrate Paleontology（英语：Treatise on Invertebrate Paleontology）. Boulder, Colorado; Lawrence, Kansas: Geological

Chris Pellant and Roger Phillips Treatise on Invertebrate Paleontology（英语：Treatise on Invertebrate Paleontology）, Part L Ammonoidea; Geological Society of