Family

Ptychophyllidae Dybowski, 1873

Aiheeseen liittyvät julkaisut

Kaljo, D. (ed) 1970. The Silurian of Estonia. pp. 1-343. Valgus.

Kaljo, D. L. 1958. Some new and little-known Baltic Tetracorals. ENSV TA Geoloogia Instituudi Uurimused III, 101-123.

List of species

1. Cyathactis balticus Kaljo, 1958 | Juuru Stage

2. Cyathactis tenuiseptatus Soshkina, 1955 | Silurian

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Luokittelu

Organism group	Biota
Kingdom	Animalia
Phylum	Cnidaria
Subphylum	Anthozoa
Subclass	Rugosa
Order	Stauriida
Suborder	Cyathophyllina
Family	Campophyllidae
	Cyathophyllidae
	Ptychophyllidae
Genus	Cyathactis
	Ptychophyllum
Family	Zaphrentidae