Fossils‎ > ‎Cretaceous Period‎ > ‎Cretaceous Cnidaria‎ > ‎

Rhzandiidae

Class Anthozoa (Sea Anemones, Corals, Sea Pens)
    Subclass Zoanthara (Hexacorallia) (Sea Anemones, Corals)
        Order Scleractina  Bourne 1900 (Stony Star Corals)
            Suborder Faviina
                Superfamily Favioidea
                    Family Rhizangiidae
d'Oribny 1851

The rhizangiids are known from the Lower Cretaceous (about 135 million years ago) to the recent, and are widespread in the tropical and temperate regions of all oceans. All species live on hard substrates on the continental shelf (0-200 m).  Among the azooxanthellate Scleractinia, the rhizangiids have most successfully occupied the neritic, hard bottom, temperate niche. All recent rhizangiids are colonial and firmly attached, but because they rarely form large colonies, they do not contribute to shallow or deeper-water reef structure. A total of 33 extant species are known in four genera but only one extinct species from New Jersey.


The modern species Astrangia haimei is shown below.



Genus Astrangia  Milne-Edwards & Haines 1848
    Subgenus Coenangia Verrill 1969

Astrangia (Coenangia) cretacea Bolshe 1870

Small convex coralla composed of 3 to 5 calices usually attached to shells or shell fragments.

Squires 1958 provides more details.


    Astrea cretacea Bolsche 1870

    Siderastrea cretacea Wells 1933


Range in New Jersey:
   Merchantville (ANSP 19644)
   Woodbury (ANSP 30482)
   Marshalltown