Neoteny
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Neoteny, also called juvenilization, is the delaying or slowing of the physiological or somatic development of an organism, typically an animal. Neoteny in modern humans is more significant than in ot
Neoteny and reduction in skull size – grey wolf and chihuahua skulls
The axolotl (Ambystoma mexicanum) is a neotenous salamander, often retaining gills throughout its life.
Trilobite beetles (Platerodrilus ngi pictured) are a genus of beetles with larviform females; other Elateroid beetles may also have these
Axolotl
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The axolotl is a species of mole salamander. It is neotenic, reaching sexual maturity without undergoing metamorphosis, and the adults remain fully aquatic with obvious external gills. Axolotls may be
Neoteny
…paedomorphism as the retention of larval traits, as seen in salamanders. Julius Kollmann created the term "neoteny" in 1885 after he described the axolotl's maturation while remaining in a tadpole-like aquatic stage complete with gills, unlike other adult amphibians like frogs and toads. The word neoteny…
Metamorphosed axolotls
Wild form
Stages of development (images captured using stereoscopic macrophotography)