basis of record
Hansson, H.G. (2001). Echinodermata, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i>. 50: pp. 336-351. (look up in IMIS) [details]
From editor or global species database
Status Mortensen (1943: footnote on p. 26) states that: " Agassiz [1872-74: p. 123] and Bell [1892: p. 152] enumerate also Ech[inus] subangulosus Lamarck as a synonym of Ech[inus] esculentus. Since this species is based on Leske's Tab. II. A-B, which is green, and is described as having the pores arranged in tree parallel vertical series, it is clear that it is not Ech[inus] esculentus, whatever it be. [...]" [details]