Subfamily Pachylasmatinae Utinomi 1968 (barnacle)
Thecostraca - Balanomorpha - Pachylasmatidae
Parent taxon: Pachylasmatidae according to B. K. K. Chan et al. 2021
Sister taxa: Eolasmatinae, Eutomolasma, Metalasmatinae
Subtaxa: Atetralasma Eurylasma Microlasma Pachylasma Pseudoctomeris Tetrapachylasma
Type: Pachylasma
Ecology: stationary epifaunal suspension feeder
Distribution:
• Quaternary of Greece (1 collection)
• Miocene of New Zealand (1), Spain (1)
• Eocene of New Zealand (4)
Total: 7 collections each including a single occurrence