Promicroceras is an extinct ammonite genus from the upper Sinemurian (Lower Jurassic) of Europe, named by Leonard Spath in 1925. Promicroceras is included in the family Eoderoceratidae, which is part of the ammonitid superfamily Eoderoceratoidea.
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原微菊石（學名：Promicroceras），又名原微角石，是生存在早侏羅紀海洋中的一屬菊石。其化石分布於英國，其中模式種Promicroceras planicosta是在英格蘭發現的。
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).