†family Phragmactinidae Spencer 1951

Phragmactinidae - Phragmactinidae

Alternative spelling: Phragmactidae

Full reference: W. K. Spencer. 1951. Early Palaeozoic starfish. Philosophical Transactions of the Royal Society of London, series B 235(B623):87-129

Parent taxon: Asterozoa according to D. B. Blake 2014

See also Owen 1965, Spencer 1951 and Spencer and Wright 1966

Sister taxa: Asteroidea, Eopentaroida, Ophiuroidea, Somasteroidea, Stenuroidea, Auluroidea

Subtaxa: Phragmactis Swataria

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Type: Phragmactis


• Ordovician of the United Kingdom (1 collection), United States (2: Pennsylvania)

Total: 3 collections each including a single occurrence

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