Extinct family of millipedes
Zosterogrammidae is an extinct family of millipedes containing three genera, each with a single species. Fossils are known from the Czech Republic, Scotland, and the USA. Zosterogrammidae constitutes the sole family of the order Zosterogrammida.
Description.
Zosterogrammids have broad heads, 20 to 32 body segments, with a body tapering towards the head and rear. The dorsal plates of each segment are very broad and the rear portion of each is segment ornamented with lines. Size ranges from to in length. Superficially they are similar to the living Polyzoniida in body proportion.
Taxonomy and distribution.
Zosterogrammidae is placed in its own order, Zosterogrammida. Zosterogrammida is considered "incertae sedis" (uncertain placement) within the millipede subclass Chilognatha.
Family †Zosterogrammidae 
 "Casiogrammus ichthyeros" - Lanarkshire, Scotland; Wenlock (Silurian)
 "Purkynia lata" - Nýřany, Czech Republic; Westphalian (Upper Carboniferous)
 "Zosterogrammus stichostethus" - Illinois, USA; Pennsylvanian (Upper Carboniferous)
References.
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