Toothcomb

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A toothcomb is a dental structure found in some mammals, particularly within the suborder Strepsirrhini of the order Primates. This specialized structure is formed by the forward extension and elongation of the lower incisors and canines, which are closely spaced and tilted forward to create a comb-like arrangement.

Structure

The toothcomb typically consists of six teeth: four incisors and two canines. These teeth are elongated and closely packed together, forming a structure that resembles a comb. The toothcomb is used primarily for grooming and feeding.

Function

The primary function of the toothcomb is for grooming. Strepsirrhine primates use their toothcombs to remove parasites and debris from their fur. Additionally, the toothcomb can be used for feeding, particularly in scraping gum and other substances from trees.

Evolution

The evolution of the toothcomb is a significant adaptation in strepsirrhine primates. It is believed to have evolved to aid in grooming, which is essential for maintaining social bonds and hygiene within these species. The presence of a toothcomb is one of the distinguishing features of the Strepsirrhini suborder, which includes lemurs, lorises, and galagos.

Taxonomic Distribution

The toothcomb is found in several families within the suborder Strepsirrhini:

• Lemuridae - This family includes lemurs, which are native to Madagascar.
• Lorisidae - This family includes lorises and pottos, which are found in Africa and Asia.
• Galagidae - This family includes galagos, also known as bush babies, which are native to Africa.

Comparison with Other Dental Structures

The toothcomb is unique to strepsirrhine primates and is not found in other primate groups such as the Haplorhini, which includes monkeys, apes, and humans. The dental structure of haplorhine primates is more generalized and lacks the specialized comb-like arrangement.

See also

• Strepsirrhini
• Lemur
• Loris
• Galago
• Grooming (animal)