P. giganteum (Baldwin, 1911) P. robustum (Baldwin, 1911)
Palaeosoma is an extinct genus of
archipolypodanmillipedes from the
upper Carboniferous of England and Poland. Individuals grew to nearly 20 cm (7.9 in) long and possessed defensive glands (
ozopores) located on small raised nodes on the outer edges of the upper surface of each body segment. Species of Palaeosoma were once considered members of the family
Euphoberiidae, which contains species with prominent spines, but are now classified in their own family (Paleosomatidae) and own order (Palaeosomatida), as they lack spines and have a combination of features not seen in other
Paleozoic millipedes.[1][2][3][4]
^Hannibal, Joseph T.; Krzeminski, Wieslaw (2005). "A palaeosomatid millipede (Archipolypoda: Palaeosomatida) from the Carboniferous (Namurian A) of Silesia, Poland". Polskie Pismo Entomologiczne. 74 (3): 205–217.
^Shear, William A.; Edgecombe, Gregory D. (2010). "The geological record and phylogeny of the Myriapoda". Arthropod Structure & Development. 39 (2–3): 174–190.
doi:
10.1016/j.asd.2009.11.002.
PMID19944188.