Thomas Say (1787–1834) based his description of the ammonite species Baculites ovata (= B. ovatus) on a single specimen in the collection of his childhood friend, the Quaker naturalist Reuben Haines III (1786–1831). However, the specimen's whereabouts faded from memory after Haines and Say both died unexpectedly in the early 1830s. The holotype specimen has been missing for more than 180 years, and was thought to be lost or destroyed until 2017, when I relocated it at Haines's ancestral home (Wyck) in Philadelphia, Pennsylvania, where his collection was preserved by his descendants in its original wooden cabinet. Herein, I present the first photographic images, an illustration of its suture line, and quantitative measurements for use by systematic paleontologists.

中文翻译：

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近两个世纪后，1820 年重新发现已灭绝的头足类 Baculites ovatus Say 的正模标本

Thomas Say (1787–1834) 基于他儿时的朋友、贵格会博物学家 Reuben Haines III (1786–1831) 收藏的单个标本对菊石物种 Baculites ovata (= B. ovatus) 的描述。然而，在海恩斯和赛伊都在 1830 年代初意外去世后，该标本的下落从记忆中消失了。正模标本已失踪 180 多年，直到 2017 年我将其重新安置在宾夕法尼亚州费城的海恩斯祖居 (Wyck)，他的收藏品被他的后代以原始形式保存在那里。木柜。在这里，我展示了第一张摄影图像，其缝合线的插图，以及供系统古生物学家使用的定量测量。