KEY 1: Presumed Plant Fossils CIC D. Cone 234 D0. Cone scale 235 D00. Seed 236 A. Angiosperm 1— C00. Wood 237 B. Leaf reasonably complete see Key 2 100–155 C000. Indeterminate 238 B0. Leaf shape unusual or indeterminate 16– B0000. Gnetophyte 240 C. Lamina of unusual shape 160 A00. Alga or fungus 3— C. Pinnately veined or indeterminate B. Alga 300 D. Toothed 161 B0. Fungus 350 D0. Entire or indeterminate 162 A000. Bryophyte 4— 400 C. Palmately veined A0000. Fern 5— D. Toothed 163 B. Leaf with sterile tissue dominant D0. Entire or indeterminate 164 C. Blades dissected B00. Flower or inflorescence 17– D. Ultimate laminar divisions without midribs C. Single flower 170 E. Veins open C0. Catkin/ament 171 F. Veins forked 500 C00. Head/capitulum 172 F0. Veins unforked 501 B000. Fruit or infructescence 18– E0. Veins closed C. Single fruit, dry F. Veins forked 502 D. Indehiscent F0. Veins unforked 503 E. Small 180 D0. Ultimate laminar divisions with midribs 504 E0. Large 181 C0. Blades undissected 505 D0. Dehiscent C0. Indeterminate fragments 506 E. Capsule, follicule, silique 182 B0. Leaf with fertile tissue dominant 507 E0. Legume, loment 183 B00. Stem or rhizome 508 C0. Single fruit, fleshy (berry, drupe, pome) 184 B000. Indeterminate fragments 509 C00. Infructescence 185 A00000. Sphenopsid 6— C000. Indeterminate fruiting structure 186 A000000. Lycopod 7— B0000. Wood/axis 19– 190 B Lycopodium or Selaginella 70– 700 A0. Gymnosperm 2— B0. Isoetales 71– 710 B. Pteridosperm (including Caytoniales) 200 A00000000. Gall or Lesion 8— 800 B0. Cycadophyte 21– A000000000. Indeterminate 9— C. Leaf B0. Stem or axis with attachments 900 D. Dissected B00. Rhizome, root, or detached axis 910 E. Pinnules entire 210 B000. Leaf 920 F. Veins parallel in pinnule B0000. Seed 930 G. Pinnule <3 cm long 211 B00000. Other organ 940 G0. Pinnule >3 cm long 212 B000000. Indeterminate; probably plant 950 F0. Veins pinnate in pinnule 213 B0000000. Indeterminate; probably not plant 990 E0. Pinnules with teeth 214 D0. Undissected E. Veins unforked 215 E0. Veins forked 216 D00. Indeterminate 217 C0. Seed, cone, or flower 218 C00. Wood or stem 219 B00. Ginkgophyte 22– 220 B000. Conifer 23– C. Foliage D. Scaley 230 D0. Needles <3 cm long 231 D00. Needles >3 cm long 232 D000. Needles flattened 233 C0. Reproductive structure

1 KEY 2: Angiosperm Leaves CIC G. Toothed 129 G0. Entire 130 F0. Shape ovate A. Leaf Compound G. Toothed 131 B. Pinnately compound G0. Entire 132 C. Toothed 100 F00. Shape obovate 133 C0. Entire 101 D0. Veination actinodromous or indeterminate B0. Palmately compound 102 E. Unlobed A0. Leaf simple F. Shape elliptic B. Petiole marginally attached G. Toothed 134 C. Veination pinnate G0. Entire 135 D. Lobed F0. Shape ovate E. Even number of lobes 103 G. Toothed 136 E0. Odd number of lobes 104 G0. Entire 137 D0. Unlobed F00. Shape obovate 138 E. Pectinal absent E0. Lobed F. Shape linear 105 F. Paripalmately lobed 139 F0. Shape oblong F0. Trilobed 140 G. Toothed 106 F00. 5+ lobed 141 G0. Entire 107 D00. Veination palinactinodromous F00. Shape elliptic E. Trilobed 142 G. Symmetrical E0. 5+ lobed 143 H. Teeth dentate 108 D000. Veination campylodromous 144 H0. Teeth serrate 109 D0000. Veination flabellate 145 H00. Teeth crenate 110 D00000. Veination parallelodromous H000. Entire 111 E. Pinnately parallelodromous 146 G0. Assymetrical 112 E0. Parallel from base 147 F000. Shape ovate D000000. Veination plicate G. Symmetrical E. Leaf shape uncertain 148 H. Teeth dentate 113 E0. Leaf palmate 149 H0. Teeth serrate 114 E00. Leaf palmate 150 H00. Teeth crenate 115 B0. Petiole attached centrally H000. Entire C. Veination pinnate 151 I. Secondaries uniform 116 C0. Veination palmate I0. Secondaries crowded towards base 117 D. Unlobed I00. Basal secondaries lower angle 118 E. Shape orbicular 152 I000. Intramarginal present 119 E0. Shape ovate G0. Assymetrical 120 F. Toothed 153 F0000. Shape obovate F0. Entire 154 G. Symmetrical D0. Lobed 155 H. Toothed 121 H0. Entire 122 G0. Assymetrical 123 E0. Pectinal present F. Shape elliptic or oblong G. Toothed 124 G0. Entire 125 F0. Shape ovate G. Toothed 126 G0. Entire 127 F00. Shape obovate 128 C0. Veination palmate D. Veination acrodromous F. Shape elliptic

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