Cladoxylopsida
Fossils of these plants originate in the Middle Devonian to Early Carboniferous periods (around 390 to 320 million years ago), mostly just as stems.[3] A recent (2017) discovery in Xinjiang in China of early Late Devonian (Frasnian, ca.374 Ma) silicified fossil cladoxylopsid tree trunks (diameter up to c.70 cm) with preserved cellular anatomy showed an internal arrangement with many xylem bundles in the outer part and none in the interior; each bundle was surrounded by its own cambium layer, by which the tree's trunk widened.You can help Wikipedia by expanding it.This article related to a Devonian plant is a stub.You can help Wikipedia by expanding it.This article related to a Carboniferous plant is a stub.
Middle DevonianEarly CarboniferousPreꞒWattiezaScientific classificationPlantaeTracheophytesPteridophyta (?)IridopteridalesPseudosporochnalesFooziaWisconsinplantssphenopsidsCardiff UniversityBinghamton UniversityNew York State MuseumArchaeopterisCairo, New YorkXinjiangDevonianFrasniancambiumBBC News OnlineBibcodeIndependent.co.ukArchaeplastidaPlantae s.l.DomainDiaphoretickesAmorpheaPicozoaPicomonasRhodelphidiaRhodelphisRhodophytaCyanidiophyceaeProteorhodophytinaPorphyridiophyceaeStylonematophyceaeCompsopogonophyceaeRhodellophyceaeEurhodophytinaBangiophyceaeFlorideophyceaeGlaucophytaGlaucocystophyceaeAlgospongiaViridiplantaePlantae s.s.green algaePrasinodermophytaPrasinodermophyceaePalmophyllophyceaeChlorophytaMamiellophyceaePyramimonadophyceaeNephroselmidophyceaePicocystophyceaeChloropicophyceaePedinophyceaeChlorodendrophyceaeUTC cladeUlvophyceaeTrebouxiophyceaeChlorophyceaeStreptophytaMesostigmatophyceaeChlorokybophyceaeSpirotaeniaKlebsormidiophyceaePhragmoplastophytaCharophyceaeColeochaetophyceaeZygnematophyceaeEmbryophytaEmbryophytesPlantae sensu strictissimoBryophytesMarchantiophytaHaplomitriopsidaMarchantiopsidaJungermanniopsidaAnthocerotophytaLeiosporocerotopsidaAnthocerotopsidaBryophytaTakakiopsidaSphagnopsidaAndreaeobryopsidaAndreaeopsidaOedipodiopsidaTetraphidopsidaPolytrichopsidaBryopsidaPolysporangiophytesHorneophytopsidaAglaophytonRhyniopsidaLycophytesBarinophytopsidaZosterophyllopsidaLycopodiopsidaclubmossesspikemossesquillwortsEuphyllophytesEophyllophytopsidaTrimerophytopsidaPolypodiopsidahorsetailsProgymnospermsSpermatophytesPteridospermsBennettitalesCalamopityalesCallistophytalesCaytonialesCordaitalesCorystospermalesCzekanowskialesGigantopteridalesGlossopteridalesLyginopteridopsidaMedullosalesPeltaspermopsida