Superorder
Juliformia (Round-backed millipedes)
Tylobolus uncigerus. Photo: (c) León Simón Sánchez, some rights reserved (CC BY-NC)
Juliformia is a taxonomic superorder of millipedes containing three living orders: Julida, Spirobolida, and Spirostreptida, and the extinct group Xyloiuloidea known only from fossils. The species possess long cylindrical bodies with sclerites (skeletal plates consisting of ventral sternites, lateral pleurites, and dorsal tergites) fused into complete rings. Juliform millipedes possess defensive repugnatorial glands on all body segments except the last few, and are the only known millipedes to produce quinones in their defensive secretions. Juliform males…
- Humboldt Life
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