There is only one species , " Longisquama insignis " , known from a poorly preserved skeleton and several incomplete fossil impressions from the Middle to Late Triassic Madygen Formation in Kyrgyzstan .
Head entity: middle Q929395 24
Tail entity: late triassic Q917293 26 27
Relation (head \u2192 tail): P155
Inverse relation (tail \u2192 head): P156