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Arachnophyllum
Taxonomy
Arachnophyllum was named by Dana (1846) [Sepkoski's age data: S Ldov-u S Ludl-u Sepkoski's reference number: 711]. It is not extant.
It was assigned to Arachnophyllinae by Hill (1956); to Arachnophyllidae by Merriam (1973) and Hill (1981); and to Rugosa by Sepkoski (2002).
It was assigned to Arachnophyllinae by Hill (1956); to Arachnophyllidae by Merriam (1973) and Hill (1981); and to Rugosa by Sepkoski (2002).
Species
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. †Arachnophyllum Dana 1846
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†Arachnophyllum approximatum Parks 1933
†Arachnophyllum kayi Merriam 1973
†Arachnophyllum murchisoni Edwards and Haime 1851
†Arachnophyllum pentagonum Goldfuss 1826
Invalid names: Darwinia Dybowski 1873 [synonym], Favastraea d'Orbigny 1850 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. W. Merriam 1973 | Astraeoid or thamnastraeoid rugose corals building horizonta1ly layered colonies in which individual corallites lack a discrete wall but on the distal surface are defined by elevated rim and axial pit. with or without crateriform margin. Septa thin, commonly with abun- dant angulation carinae; longer tnajor septa reaching the axis. Dissepiments very numerous, largely with near- horizontal bases in a wide dissepimentarium. with tabellae arched distally or rather flat. Longitudinal sections showing groups of vertical trabecular thickenings commonly defining septal traces. |