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Hexagonaria
Taxonomy
Hexagonaria was named by Gürich (1896) [Sepkoski's age data: D Give-u D Fras-u Sepkoski's reference number: 680].
It was assigned to Phillipsastraeinae by Hill (1956); to Disphyllidae by Merriam (1974); to Hexagonariinae by Hill (1981); and to Rugosa by Sepkoski (2002).
It was assigned to Phillipsastraeinae by Hill (1956); to Disphyllidae by Merriam (1974); to Hexagonariinae by Hill (1981); and to Rugosa by Sepkoski (2002).
Species lacking formal opinion data
Synonyms
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Synonymy list
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Hexagonaria Gürich 1896
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†Hexagonaria davidsoni Milne-Edwards and Haime 1851
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Invalid names: Acervularia bassleri Webster and Fenton 1924 [synonym]
†Hexagonaria hexagona Goldfuss 1826
†Hexagonaria reedi Schroeder and Leleshus 2002
Invalid names: Hexagoniophyllum Gürich 1909 [synonym], Polyphyllum Fromentel 1861 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. W. Merriam 1974 | The colonies are spherical and mush- room shaped; the polygonal corallites are separated by a discrete, usually unthickened wall. Calices have a flat or axially sloping peripheral platform and a deep axial pit. Major septa are unbroken from the wall into the tabularium and commonly reaching the axis; minor septa end at tabularium margin. Septa are normally thin, modified by waviness, minor zigzag elbow carinae and strong yardarm carinae. Dissepimentarium, usually wide, has multiple columns in which peripheral dissepiments lie nearly flat. There are no horseshoe dissepiment columns and no associated trabecular bundles. |