Engis 2
Engis 2 refers to part of an assemblage, discovered in 1829 by Dutch/Belgian physician and naturalist Philippe-Charles Schmerling in the lower of the Schmerling Caves. The pieces that make up Engis 2 are a partially preserved calvaria and associated fragments of an upper and a lower jaw, a maxillary bone and an upper incisor tooth of a two to three year old Neanderthal child. The Schmerling Caves are situated just north of the Belgian municipality Engis, whence the name of this group. In 1833 Schmerling described and publicized the find, which included animal bones and stone tools. Recognizing their old age, he associated them with the "Ethiopian Type" of the diluvial period. Although it was not recognized as such until 1936, the publication represents the first scientific description of a Neanderthal fossil.
Early Misclassification
Originally misclassified as "modern", the fossil received little attention after its publication in the 19th century as it was compared to Engis 1 - the almost perfectly preserved skull of an adult Homo sapiens. In 1758, Carl Linnaeus had published the 10th edition of his work Systema Naturae in which Homo sapiens as a species name was introduced to the public, yet without a thorough diagnosis and without a precise description of the species-specific characteristics.As a result, any criteria by which a fossil of the species Homo sapiens could be classified into and distinguished from the genus Homo did not exist in the early 19th century.
Even Thomas Henry Huxley, a supporter of Darwin's theory of evolution, saw in the 1863 findings of the Engis cave a "man of low degree of civilization" and also interpreted the Neandertal 1 fossils of the Kleine Feldhofer Grotte unearthed in 1856 as belonging within the range of variations of modern man. Additionally, the skull of an infant Neanderthal and an equally old child of anatomically modern humans are of far greater resemblance than their respective adult skulls. The vast majority of the anthropologists of the 19th and early 20th century considered all hominid fossils as belonging to representatives of early "races" of modern man. Hence it was incorrectly believed that the modern man's skull Engis 1 must be related to the child's skull Engis 2.