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1978年笔者等在陕西洋县金水河廖家山北东约一百米的新公路边(图1),于含钒炭硅质建造中的深灰色薄层含石墨石英岩中,采得鹦鹉螺化石残块一件。标本虽遭强烈变形,仍可见七个隔壁(见图版Ⅲ—1、图2),经中国科学院南京古生物研究所陈挺恩同志鉴定为Pseudorthocerataceae(假直角石超科)。从其类型看,好似 Mysterioceratidae(?)(缪斯特里超科),但是,没有看到附壁沉积。
In 1978, the author waited for a new road side of about 100 meters to the north of Liao Jiashan, Jinshui River, Yangxian County, Shaanxi Province (Figure 1). In the dark gray thin-grained graphite-bearing quartzite containing vanadium-carbon siliceous construction, A piece of fossil debris. Despite the strong deformation of the specimen, seven adjacent walls are still visible (see Plate Ⅲ-1, Figure 2). Pseudorthocerataceae (pseudo-orthopedic stone superfamily) has been identified by the Chen Ting’en, a member of the Nanjing Institute of Paleontology, Chinese Academy of Sciences. From its type, it looks like Mysterioceratidae (?) (Museest), however, there is no evidence of adhesion to the wall.