Heterospongia subramosa

Classification
Phylum: Porifera
Class: Demospongia
Order: Lithistida
Family: Eospongiidae
Genus: Heterospongia
Species: Heterospongia subramosa Ulrich, 1889

[accordions title=”” disabled=”false” active=”1″ autoheight=”false” collapsible=”true”] [accordion title=”Taxonomic Details”]

1889 Heterospongia subramosa Ulrich, Amer. Geol., 3, p. 236, 240, fig. 6.

1891 Heterospongia subramosa James, Jour. Cincinnati Soc. Nat. Hist., 14, pt. 1, p. 71.

1895 Heterospongia subramosa Winchell and Schuchert, Geol. Minnesota, 3, pt. 1, p. 79, pl. G, figs. 4-6.

[/accordion] [/accordions]

Stratigraphic Occurrences

Geographic Occurrences

Map point data provided by iDigBio.

[accordions title=”” disabled=”false” active=”1″ autoheight=”false” collapsible=”true”] [accordion title=”Stratigraphic Description”]
Sequences (Formations)

C4 (Arnheim)
C2 (Fairview)

[/accordion] [/accordions]

Identification in Hand Sample

Composed of cylindrical or compressed branches
Twiglike form and moderately open small canals
Subramose or palate form
Irregularly distributed canal apertures
Undetermined spiculae

Heterospongia subramosa from the Richmond Formation of Lebanon, Kentucky (CMC 7034)

[accordions title=”” disabled=”false” active=”1″ autoheight=”false” collapsible=”true”] [accordion title=”Published Description”]

Fossils of Ohio (1996):

Ulrich, showing characteristic twiglike form and moderately open small canals.

McFarlan (1931):

Sponge subramose, of cylindrical or compressed branches up to 30 mm. or more in width. Its general features are shown in the accompanying figures.

James (1891):

Sub-ramose or palmate; branches more or less flattened, from 9 to 13 mm. thick and from 11 to 30 mm wide; surface generally even, with irregularly distributed canal apertures; these of varying size, the average diameter being 0.7 mm., with five in five mm.; space between apertures varying from 0.2 mm. to 1.2 mm.; sponge skeleton composed of more or less loosely interwoven fibers, though the interspaces generally appear solid and structureless; spiculae undetermined.

[/accordion] [/accordions]