Key-to-species of Abertella A key for the identification of members of the fossil sand dollar Abertella (Echinoidea: Clypeasteroida: Abertellidae) created by Andreas Kroh, May 2014. Based on the following source: Kroh, A., Mooi, R., del Río, C. & Neumann, C. 2013. A new late Cenozoic species of Abertella (Echinoidea: Clypeasteroida) from Patagonia. Zootaxa 3608, 369-378. Key created by Andreas Kroh Restart from Abertella | Restart Completely | Select different key | Show legend

Characteristics  anal notch shape        shallow and wide (opening at an obtuse angle >90°)       Anal notch deep and narrow (opening at an acute angle <90°)  interambulacrum 5 at ambitus        strongly constricted       not strongly constricted  occluded plates at ends of petals        more than 4       less than 4

Remaining taxa: Abertella aberti (Conrad, 1842) Abertella cazonensis Abertella complanata Brito, 1981 Abertella dengleri Osborne & Ciampaglio, 2010 Abertella gualichensis Martínez, Reichler & Mooi, 2005 Abertella habanensis (Sanchez Roig, 1949) Abertella miskellyi Kroh, Mooi, del Rió & Neumann, 2013 Abertella pirabensis (Marchesini Santos, 1958)