Hardouinia is an extinct genus of echinoids that lived in the Late Cretaceous. Its remains have been found in North America.
Hardouinia is an extinct genus of echinoids that lived in the Late Cretaceous. Its remains have been found in North America.
==References== Fossils (Smithsonian Handbooks) by David Ward (Page 182)
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).