Hyolitha

Hyolitha
Temporal range: Fortunian to end Permian,
Hyolithes cerops, Spence Shale, Idaho (Middle Cambrian)
Scientific classification
Kingdom: Animalia
Superphylum: Lophotrochozoa
Class: †Hyolitha
Marek, 1963
Orders

See text.

Hyoliths are an extinct group of invertebrates with small conical shells, known from fossils from the Palaeozoic era. They are at least considered lophotrochozoans, possibly being lophophorates, a group which includes the brachiopods (hyoliths may even be brachiopods themselves), while others consider them as being basal lophotrochozoans, or even molluscs.

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