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From Biology-Online Dictionary | Biology-Online Dictionary
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noun, plural: horsefeet

(zoology) Horseshoe crab; limulus

(botany) Coltsfoot


In zoology, horsefoot pertains to the horseshoe crab. The horseshoe crabs are marine arthropods of the family Limulidae, and of the subphylum Chelicerata. The horeshoe crabs are chelicerates, which owe their name to their feeding appendages called chelicerae. The horseshoe crabs have three major body regions: the prosoma (i.e. the head region), opisthosoma (i.e. the abdominal region), and the telson (i.e. the tail region). They have five pairs of appendages with a claw on each tip. Their mouth is in the center of their legs. Near the mouth is a pair of ventral eyes. Apart from these ventral eyes, they also have a pair of compound lateral eyes, a pair of median eyes, a pair of lateral eyes, and a single endoparietal eye. Apart from being referred to as horsefeet and horseshoe crabs, they are also known as saucepan. Their common names are derived from their carapace's shape. The carapace is the hard outer protective covering of their body.

In botany, the horsefoot refers to the coltsfoot. Colsfoot is an herbaceous plant, particularly the Tussilago farfara. The species is a flowering plant that belongs to the family Asteraceae and Order Asterales. The common names, horsefoot and coltsfoot, are derived from the resemblance of the leaves to a colt's or horse's foot.