This fossil appears to be an Ectenocrinus (Heterocrinus) simplex (Hall, 1847) crinoid calyx fossil. It was found by Lucien Beckner (1872-1...

Years ago I posted a picture of a fossil crinoid Myelodactylus convolutus (Hall, 1852) that is normally seen coiled up. This fossil specime...

Recently, the The J. Paul Getty Museum of Los Angeles, California, USA made almost 88,000 images available under the Creative common Zero l...