TABLE 1 in One steps out of line-A " modern " Micraster species (Echinoidea, Spatangoida) with some old-fashioned look, Micraster ernsti sp. nov. from the Campanian (Cretaceous)
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TABLE 1. Morphological distinctions between Micraster ernsti sp. nov., the species discussed herein, and other (contemporary) species, with emphasis on their inferred ecological niches. Similar features of each species are depicted in matching shades of gray to emphasize their differences. SpeciesM. ernsti sp. nov.M. gibbusM. fastigatusM. stolleyiM. gourdoniM. glypghusM. mengaudiM. quebradadevelopment of AIIIsubpetaloidsubpetaloidsubpetaloidsubpetaloidsubpetaloidnonpetaloidnonpetaloid/ subpetaloidnonpetaloid/ subpetaloidposition of peristomedistant to ant. marginclose to anterior marginclose to anterior marginclose to anterior marginclose to anterior marginclose to anterior marginclose to anterior margindistant to anterior margintest shapeinflatedinflatedinflatedinflatedinflatedflatinflated/flatinflated/flatprojection of labrummoderatemoderatepronouncedpronouncedpronouncedpronouncedpronouncedsubtlephyllode developmentwell-developedreducedreducedreducedreducedreducedreducedwell-developedtip of labrumsmoothgranulargranulargranulargranulargranulargranularsmoothorientation of peristomefacing forewardfacing forewardfacing forewardfacing forewardfacing forewardfacing forewardfacing forewardfacing downwardanterior sulcusfeebleshallowmoderateprominentprominentprominentfeeble/moderatefeeble/moderateposition of periproctlowlowlowlowlowhighlow/highlow/highfeeding strategyfrom below the test/within sedimentfrom sediment surfacefrom sediment surfacefrom sediment surfacefrom sediment surfacefrom sediment surfacefrom sediment surfacefrom below the test/ within sediment
