Parent taxon: Pteridospermophyta according to H. N. Andrews 1970
Sister taxa: Albertlongia, Angaropteris, Bardia, Bilignea, Boulaya, Brongniartites, Buteoxylonales, Calathiops, Calathospermum, Calymmatotheca, Camptosperma, Canipa, Cephalopteris, Chapelia, Coseleya, Crossotheca, Dictyoxylon, Dimeripteris, Diplotheca, Diplothmema, Dolichosperma, Eccroutosperma, Eltovaria, Emplectopteris, Eurystoma, Geminitheca, Genomosperma, Gimmia, Girtya, Glossophyllaceae, Gnetopsis, Heterangium, Heterotheca, Hoegia, Hydrasperma, Hymenotheca, Ilfeldia, Jongmansis, Kegelidium, Kurtziana, Lacoea, Lagenospermum, Lagenostoma, Lithangium, Lyginorachis, Megaloxylon, Microspermopteris, Nudospermum, Nystroemia, Ootheca, Paracalathiops, Paragonorrachis, Perezlaria, Periastron, Physostoma, Pteridozamites, Rhetinangium, Rotodontiospermum, Runcaria, Salpingostoma, Schopfiastrum, Simplotheca, Spermolithus, Spermopteris, Sphaerostoma, Sphenoxylon, Stamnostoma, Staphylotheca, Stenokoleos, Syncrama, Tantallosperma, Telangium, Tetrastichia, Tristichia, Tyliosperma, Unguitheca, Utkalia, Zimmermannitheca
Subtaxa: Yakia heterophylla
Type: Yakia heterophylla
Ecology: "photoautotroph"
Distribution:
• Permian of United States (2: Arizona, Utah collections)
• Carboniferous of United States (1: Arizona)
Total: 3 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.