Arthropleura

Arthropleura is an extinct genus of large, millipede-like arthropods known from the Carboniferous and early Permian. Its largest species rank among the biggest land-dwelling invertebrates known.

Myriapoda: A subphylum of arthropods that includes millipedes, centipedes, and their close relatives. Arthropleura is commonly compared with millipedes, which belong to this broader group.
Arthropleura trackway: A fossilized trail attributed to Arthropleura, preserving repeated impressions made as the animal crossed soft sediment. Trackways provide evidence of locomotion independent of the animal's body fossils.
Arthropleura armata: A species of Arthropleura known from fossils, including specimens from the United Kingdom. This named species is among the best-known examples used to study the genus.
Arthropleura size: Estimates of Arthropleura's body length and mass inferred from incomplete fossils and trackways. Different kinds of evidence yield estimates that are not equally secure.
Millipede: A many-legged myriapod whose body usually has two pairs of legs on most trunk segments. Its body plan inspired the familiar millipede-like description of Arthropleura.
Exoskeleton: A rigid external support and protective covering found in many invertebrates, including arthropods. Arthropleura's preserved body segments were parts of an external skeleton.
Arthropleura fossils in Scotland: Fossil remains of Arthropleura discovered in Carboniferous rocks in Scotland. Scottish finds document the animal's presence in ancient environments near the equator.
Arthropleura diet: The unresolved question of what Arthropleura ate, with plant material and detritus among proposed foods. Its diet is inferred from habitat and anatomy rather than direct observation of feeding.
Arthropod: An invertebrate animal with a segmented body, jointed limbs, and an external skeleton. Arthropleura's segmented exoskeleton and jointed appendages place it among arthropods.
Arthropod leg: A jointed appendage used by arthropods for locomotion or other functions. Its numerous jointed legs would have supported movement along the forest floor.

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