Peltoceras (Peltoceratoides) williamsoni

Holotype. Although the exact horizon of the holotype is not known, Arkell (1944, p. 290) noted that "P. williamsoni is said to be characteristic of the lower part of the Passage Beds of Scarborough and Filey (see Fox-Strangways, 1892[a], p. 318)" and he recorded other specimens from the Passage Beds [Member] at Scarborough. Colour Laser Scan. Source: Objaverse 1.0 / Sketchfab正模标本（Holotype）。尽管该正模标本的确切产出层位尚不明确，Arkell（1944年，第290页）曾指出：“据称P. williamsoni为斯卡伯勒与菲莱通道层（Passage Beds）下部的特征化石（参考Fox-Strangways，1892[a]，第318页）”，同时他还记录了斯卡伯勒地区通道层[成员（Member）]的其他标本。 彩色激光扫描（Colour Laser Scan）。 数据来源：Objaverse 1.0 / Sketchfab