Khmeriamorpha

Khmeriamorpha Temporal range: Late Permian–Late Triassic PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Subphylum:	Tunicata
Class:	Ascidiacea
Order:	†Khmeriamorpha Wendt, 2018
Genera and species
Khmeria K. minima K. problematica K. stolonifera Zardinisoma Z. cassianum Z. japonicum Z. pauciplacophorum Z. polyplacophorum Z. pyriforme

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

1. 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.