Stromatoporoid (calcareous sponge) | Ohio Department of Natural Resources
Sponge fossils
Sponge fossils
The 890-million-year-old sponge fossil may be the oldest animal yet discovered - Arkeonews
MI Backyard Fossils Corals – UMORF | University of Michigan Online Repository of Fossils
Fossil Sponge? Found in central Tennessee - Fossil ID - The Fossil Forum
Automatic taxonomic identification based on the Fossil Image Dataset (>415,000 images) and deep convolutional neural networks | Paleobiology | Cambridge Core
fossil identification by shape
Sponge fossils from the Eocene of Chiampo. A. The lyssacinosid... | Download Scientific Diagram