Strepsirrhini
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Strepsirrhini or Strepsirhini is a suborder of primates that includes the lemuriform primates, which consist of the lemurs of Madagascar, galagos and pottos from Africa, and the lorises from India and
Early primates possessed adaptations for arboreal locomotion that enabled maneuvering along fine branches, as seen in this slender loris.
Notharctus, a type of North American adapiform, resembled lemurs but did not give rise to them.
The suborder Strepsirrhini was proposed by É. Geoffroy in 1812.
Fork-marked lemur
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Fork-marked lemurs or fork-crowned lemurs are strepsirrhine primates; the four species comprise the genus Phaner. Like all lemurs, they are native to Madagascar, where they are found only in the west,
P. furcifer, first described in 1839, was illustrated in Brehms Tierleben.
Fork-marked lemurs are distinguished by the dorsal black stripe that forks on the crown of their head.
Males, such as this P. pallescens, have a scent gland on their throat, which they only use during social grooming.