Khmeriamorpha is an order of extinct ascidians, characterized by a composite calcareous exoskeleton. It is known from the Late Permian to Late Triassic, and comprises the genera Khmeria and Zardinisoma.[1]
References
- ^ Wendt, Jobst (July 2018). Hautmann, Michael (ed.). "The first tunicate with a calcareous exoskeleton (Upper Triassic, northern Italy)". Palaeontology. 61 (4): 575–595. doi:10.1111/pala.12356. ISSN 0031-0239.
