Parent taxon: Gymnospermae according to Gorozhankin 1904
Sister taxa: Condylites, Masculostrobus, Palaeocyparis, Pinopsida, Podocarpopsida, Satyrites incertus, Taxopsida, Voltziopsida, Damudoxylon, Voltziostrobus, Tanaidocarpidium, Shivacarpus, Sonajorispermum, Coniferales, Taxaliospermum, Cornucarpus, Bulbospermum, Taxopitys, Platycardia, Alatocarpus, Otofeistia, Nidispermum, Aethophyllum, Sertostrobus, Collospermum, Kamthioxylon, Cardiocarpum, Palispermum, Polyloboxylon, Polysolenoxylon, Pantiaspermum, Parapalaeoxylon, Savitrispermum, Kaokoxylon, Palaeocarpus, Cordaitopsida, Maheshwariella, Stephanostoma, Gondwanophyllites, Megaporoxylon, Pakuriospermum, Prototaxopitys, Trigonomyelon, Sujfunophyllum, Taxineae, Entylissa, Cupressoconus, Rotundaspermum, Indoxylon, Retortistoma, Archaeosperma, Triangulospermum, Niponophyllum, Paradoxospermum, Birsinghpuria, Bennettitales, Carpodium, Scirroma, Kryshtofovichiella, Zalesskioxylon, Surangephyllum, Arberiella, Barakaroxylon, Sclerospiroxylon, Prototaxoxylon, Nandorioxylon, Stereocarpus, Belemnopteris, Uesuguipollenites, Tanaidia, Nummulospermum, Pyriformispermum, Coniferoovulites
Subtaxa: none
Distribution: found only at SC2 - Arroyo de los Ciervos section (Miocene to Miocene of Argentina)