Bones and cross-sections of bones of an okapi, a giraffe, an eland and a samotherium. Lithograph by J. Green.

The "elan" referred to in the lettering is probably an eland

Eland: any antelope of the genus Taurotragus, native to Africa, having spirally twisted horns

Giraffes: Giraffes branched off from the deer just after Eumeryx. The first giraffes were Climacoceras and then Canthumeryx, Paleomeryx, then Paleotragus, a short necked giraffid complete with short skin-covered horns. From there the giraffe lineage goes through Samotherium, another short-necked giraffe, and then split into Okapia (one species is still alive, the okapi, essentially a living Miocene short-necked giraffe) and Giraffa, the modern long-necked giraffe

[Place of publication not identified] : [publisher not identified]

1 print : lithograph

1,3,8,13, Samotherium. 2,7,9,10 Giraffe. 4,5,6,12, Okapi. 11. Elan. J. Green del. et lith Bears number top right : PL. XIII

Wellcome Collection 42199i