Fossils‎ > ‎Cretaceous Period‎ > ‎Cretaceous Porifera‎ > ‎


Class Demospongiae Sollas 1875
    Order Hadromerida
Topsent 1898
         Family Clionaidae D'orbigny, 1851
            Genus Cliona Grant 1826

Clionidae are boring sponges, and are sometimes referred to as sulfur sponges because of their yellow color.

Modern boring sponge, Cliona celata

The ichongenus Entobia also appears to be synonym for the Cliona

Cliona cretacia Fenton & Fenton 1932

Represented as a trace fossil by branching tubular excavations, usually in the shells of pelecypods of the genera Gryphaea and Exogyra. The tubes are open to the outer and inner surface of the shell more or less parallel to the surfaces. The shells are often riddled with these tubes which are largely filled with a dark material.

    Cliona cretacia
Fenton & Fenton 1932 p. 55, pl. 7, figs 8,9


Range - Merchantville, Mt Laurel, Navesink
Type - Mullica Hill, N.J. NJSM 8184 (lost); paratype NJSM 8185

RICHARDS 1958, pl. 1

Cliona microtuberum

Represented as a trace fossil by irregular excavations in shells such as the mollusk Gryphaea. The tubes are tubular in some parts, but others are irregular ovate or subshperical. The tubes are often filled with a dark material, probably phosphatic in nature.

    Cliona microtuberum Stephenson 1941 p. 54, pl. 3, figs 1-5

Range - Navesink
Type - Navarro Formation, Texas. USNM 76266.

 RICHARDS 1958, pl. 2
Cliona retiformis
Stephenson 1953

Represented as a trace fossil as ferruginous internal molds of the burrows. The tubes are irregular in shape and direction, often meeting and joining with other burrows to form a network.

    Cliona retiformis Stephenson 1953 p.50 pl.8, figs 1-3

    Cliona retiformis Stephenson 1954 p. 27, pl.6 fig. 1

Range - Raritan
Type - Terrant County, Texas. USNM. 105068
Plesiotype - Sayreville, NJ. USNM 108611, 108612.