The Xujiachong Formation is an early Devonian formation from China. It preserves a wide range of plant and fish fossils, many being only known from this formation.
Paleobiota
Plants
PlantsGenusSpeciesHigher taxonNotesImagesAdoketophytonA. subverticillatumLycophytaSynonymous with "Zosterophyllum spathulatum"BracteophytonB. variatumTracheophyta incertae sedisResembles lycophytes somewhat, but likely not one itself.DrepanophycusD. qujingensisDrepanophycalesFormerly placed within D. spinaeformisGuangnaniaG. cuneataZosterophyllopsidaUnclear whether it truly is a zosterophyll, somewhat similar to YuniaHedeiaH. sinicaProgymnospermopsidaResembles both seed plants and trimerophytesHsuaH. robusta, H. deflexaRhyniophyta?HuiaH. gracilisZosterophyllales?More slender than the type speciesZosterophyllumZ. yunnanicum, Z. australianumZosterophyllalesUsed to date the Xujiachong Formation
Animals
AnimalsGenusSpeciesHigher taxonNotesImagesEugaleaspisE. xujiachongensisGaleaspidaFormerly placed under "Galeaspis", but this genus was preoccupied by the trilobite Galeaspis.GantarostrataspisG. gengiGaleaspidaMostly known from the Posongchong FormationMiziaM. longhuaensis, M. parvusYunnanolepididaeM. parvus formerly placed within YunnanolepisNeopetalichthysN. yenmenpaensisPetalichthyidaRelatively basal member of the cladePampetalichthysP. longhuaensisPetalichthyidaFormerly classed as "Holopetalichthys"PterogonaspisP. yuhaiiGaleaspidaSimilar to TridenaspisQushiaspisQ. elaiaGaleaspidaMost basal member of Gantarostrataspididae.SanqiaspisS. rostrataGaleaspidaAnother species known from VietnamSanchaspisS. magalarostrataGaleaspidaBears an unusual mushroom-shaped rostrumSzelepisS. yunnanensisActinolepididaeRedescribed in 2017XichonolepisX. qujingensisSinolepidae (Antiarchi)YoungolepisY. praecursorDipnoiKnown from various other formations in early Devonian China
References