Morrowan lithistid demosponges and hexactinellids from the Ozark Mountains of northwestern Arkansas

J. K. Rigby, and W. L. Manger

1994

Article

Journal of Paleontology 68(4):734-746

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Taxa discussed in this work:

• Stioderma hadra
• Virgaspongia
• Virgaspongia ichnata

Taxonomy:

• Virgaspongia belongs to Anthaspidellidae - Rigby and Manger (1994)
• Virgaspongia ichnata belongs to Virgaspongia - Rigby and Manger (1994)
• Stioderma hadra belongs to Stioderma - Rigby and Manger (1994)