Order Umbraculomorpha Schmekel 1985 (snail)

Gastropoda - Opisthobranchia

Parent taxon: Opisthobranchia according to J. J., Jr. Sepkoski 2002

Sister taxa: Acanthotrophia, Acochlidea, Buscotypus, Canepina, Cephalaspida, Cephalaspidea, Cylindrobullinoidea, Floribella, Gymnosomata, Heteroptygmatis, Heterostrophia, Lutima, Mariottia, Mistostigma, Nicosiaella, Notaspidea, Paronaella, Pseudofusia, Reticulacella, Rhodopemorpha, Scorbinidola, Tectibranchia, Thecosomata

Subtaxa: Eosinica Tylodinella

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Ecology: epifaunal

Distribution:

• Eocene of United States (8: Alabama, Texas collections)

• Paleocene of United States (1: Alabama)

Total: 9 collections including 10 occurrences

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