Robuta

https://www.usgs.gov/publications/endictya-hendeyi-sp-nov-a-new-coastal-diatom-species-north-america Endictya hendeyi sp. nov., a new coastal diatom species from North America | U.S. Geological Survey Endictya hendeyi E. Hemphill-Haley sp. nov. is described from Recent and Quaternary, estuarine and marine deposits along the west coast of the United States....