Walnut Creek (Central Texas)

Langston Jr.）（1921–2013）將這批在德州核桃溪（英语：Walnut Creek (Central Texas)）（Walnut Creek）沿岸採集到的蜥腳類恐龍化石歸類為側空龍屬的未命名種（Pleurocoelus sp

CA, U.S.A. G54: Hemet, CA, U.S.A. G55: Bakersfield, CA, U.S.A. G56: Walnut Creek G57: Dilbert Observatory, Forest Grove G58: Chabot Space and Science