Halichondria panicea
From the collection of Yale Peabody Museum. Free to download, adapt and use — no permission needed.
Collection locality: 3 miles N of Sandy Point, Washington County, Rhode Island, USA. Collected by Warfel, H. E.; Hartman, W. D.; Merriman, D., 1944-07-23. IZ number 778; lot count 1; Microslide 01, balsam, spicules; Microslide 02, balsam, spicules; Microslide 03, balsam, thin section; Microslide 04, balsam, thin section; Microslide 05, balsam, spicules; Microslide 06, balsam, spicules; Microslide 07, balsam, thin section; Microslide 08, balsam, thin section; Microslide 09, balsam, thin section; Microslide 10, balsam, serial section; Microslide 11, balsam, serial section; Microslide 12, balsam, spicules; Microslide 13, balsam, spicules; Microslide 14, paraffin, serial section; Microslide 15, paraffin, serial section; Microslide 16, paraffin, serial section; other number BOC 34; accn=IZA.07778.
Yale Peabody Museum’s own description