| Name | heart urchins | ||||||
| Language | English | ||||||
| ISO 639-3 | eng | ||||||
| Source | Deméré, T. A. & Rugh, N. S. 2006. Invertebrates of the Imperia Sea. Pp. 43-69 in G. T. Jefferson & L. Lindsay (eds.) Fossil Treasures of the Anza-Borrego Desert Sunbelt Publications, El Cajon, CA. | ||||||
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