PLACOSPONGIIDAE Gray, 1867
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publication ID |
https://doi.org/ 10.5281/zenodo.5400184 |
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DOI |
https://doi.org/10.5281/zenodo.5476234 |
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persistent identifier |
https://treatment.plazi.org/id/8B319360-E71A-FFCF-FABA-FDB23D8BCEED |
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treatment provided by |
Marcus |
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scientific name |
PLACOSPONGIIDAE Gray, 1867 |
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Family PLACOSPONGIIDAE Gray, 1867 View in CoL
DIAGNOSIS (revised). — Hadromerida with tylostyles as megascleres and selenasters or amphiaster-like sterrasters (amphinolasters) as primary microscleres forming polygonal cortical crusts. Cortical plates separated by contractile ectosomal pore grooves bearing ostia and oscula. Tylostyles in tracts radiating from the base toward the surface and supporting the margins of the cortical plates. Accessory microscleres include spirasters, spherasters, and spherules.
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