Beautiful cluste of fossil Spatangus echinoids preserved on their original natural matrix from Portugal. The three specimens have been carefully prepared on the matrix to create an aesthetically pleasing presentation. Despite these imperfections, two echinoids are restored, the specimens retain with the characteristic heart-shaped outline and surface details still clearly visible. These fossil sea urchins represent an excellent opportunity for collectors of echinoids, marine fossils, and natural history specimens. Specifications Species: Spatangus lamberti Type: Fossil echinoids (sea urchins) Origin: Portugal Matrix: Original natural matrix Preservation: Approximately 10% restored Condition: Good display condition with minor restored or concealed missing areas Echinoids are 7 cm of diameter. A charming and authentic fossil group combining natural preservation, aesthetic presentation, and collectible appeal.