English Helminthopsis Cited by user Citation bot on 06 Feb 2021 Helminthopsis is the ichnogenus of a type of trace fossil that is found preserved on the bedding planes of fine-grained sedimentary rocks.
English Haplotichnus Cited by user Citation bot on 03 Sep 2019 Haplotichnus is an ichnogenus of invertebrate trace fossil that was erected by S.A. Miller in 1889.