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Harpoceras serotinum
Taxonomy
No taxonomic data are available
Sister species
H. crassefalcatum, H. dynastes, H. eseri, H. falciferum (syn. Ammonites mulgravius, Phaularpites exiguus, H. falciferoides, H. falcula, H. fellenbergi, H. concinnum, Tardarpoceras tardum), H. ignobile, H. kobelli, H. lunula, H. nitescens, H. pseudoserpentinum, H. rauracum, H. serpentinum (syn. Ammonites alternatus), H. subplanatum (syn. Ammonites complanatus)
Sister species lacking formal opinion data