Xyloiulus

Xyloiulus is an extinct genus of millipede that lived during the Late Carboniferous which grew up to 2.25 inches (5.7 cm) in length. Fossils of the animal have been found in North America and Europe.^[2] The fossils are typically found in Sigillarian stumps.^[3]

Xyloiulus Temporal range: Late Carboniferous[1] PreꞒ Ꞓ O S D C P T J K Pg N
Syntype of X. mazonus (USNM 38036)
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Diplopoda
Superorder:	Juliformia
Superfamily:	†Xyloiuloidea
Family:	†Xyloiulidae Cook, 1895
Genus:	†Xyloiulus Cook, 1895
Type species
Xyloiulus sigillariae (Dawson), 1860
Species
Xyloiulus bairdi Hoffman, 1963 Xyloiulus frustulentis Scudder, 1890 Xyloiulus mazonus Scudder, 1890 Xyloiulus pstrossi Fritsch Xyloiulus sigillariae (Dawson), 1860 Xyloiulus sellatus Fritsch
Synonyms
Xylobius

Illustration of X. moniliformis fossil