Gracilisuchidae is an extinct family of suchian archosaurs known from the early Middle Triassic to the early Late Triassic ( Anisian - early Carnian ) of China and Argentina .
Head entity: late triassic Q917293 17 18
Tail entity: middle triassic Q929395 12 13
Relation (head \u2192 tail): P155
Inverse relation (tail \u2192 head): P156