Parent taxon: Gymnospermae according to S. Chandra and R. Tewari 1991
Sister taxa: Aethophyllum, Alatocarpus, Allicospermum, Araucariales, Arberiella, Archaeosperma, Barakaroxylon, Belemnopteris, Bennettitales, Birsinghpuria, Bulbospermum, Cardiocarpum, Carpodium, Collospermum, Coniferae, Coniferales, Cordaitopsida, Cornucarpus, Cupressoconus, Damudoxylon, Entylissa, Gondwanophyllites, Indoxylon, Kamthioxylon, Kaokoxylon, Kryshtofovichiella, Lyginopteridopsida, Maheshwariella, Megaporoxylon, Nandorioxylon, Nidispermum, Niponophyllum, Nummulospermum, Otofeistia, Pakuriospermum, Palaeocarpus, Palispermum, Pantiaspermum, Paradoxospermum, Parapalaeoxylon, Platycardia, Polyloboxylon, Polysolenoxylon, Prototaxopitys, Prototaxoxylon, Pyriformispermum, Rotundaspermum, Savitrispermum, Scirroma, Sclerospiroxylon, Sertostrobus, Shivacarpus, Sonajorispermum, Stephanostoma, Stereocarpus, Sujfunophyllum, Surangephyllum, Tanaidia, Tanaidocarpidium, Taxaliospermum, Taxineae, Taxopitys, Triangulospermum, Trigonomyelon, Uesuguipollenites, Voltziostrobus, Zalesskioxylon, Paradoxoxylon, Ashmoripollis, Enzonalasporites, Menaispermae, Alisporites, Svalbardoxylon, Ktalenia, Cycadinoxylon, Sofrepites, Yorkoxylon, Scotoxylon, Exesipollenites, Majsassia, Darneya, Embergerixylon, Dinophyton, Cedripites, Lasiostrobus, Indusiisporites, Rugubivesiculites, Pilasporites, Gnetaceaepollenites, Perinopollenites, Antarcticoxylon, Galeacornea, Squamae, Zonallapollenites, Yezonia, Taeniopitys, Shanbeipollenites, Trisocladus, Lobatoxylon, Solenoxylon, Lagenospermopsida, Falcisporites, Minutosaccus, Protocircoporoxylon, Pteridospermopsida, Taxacites, Eddya, Parcisporites, Tordoxylon, Pteridospermaexylon, Cerebropollenites, Protopitys, Protopolyporoxylon, Decussosporites, Striomonosaccites, Accintisporites, Tungussocarpus, Prototaxodioxylon, Reticulopitys, Parataxopitys, Amdrupia
Subtaxa: Retortistoma crystallina
Type: Retortistoma crystallina
Ecology: "photoautotroph"
Distribution: found only at Pali Birsinghpur (Permian of India)
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.