TABLE 1. Occurrences of angiosperm leaf megafossils at the four localities of the Dakota Formation, Braun’s ranch, Kansas (Wang and Dilcher 2006a), Hoisington, Kansas, Rose Creek, Nebraska (Upchurch and Dilcher 1990), and Courtland, Minnesota (Wang and Dilcher 2009). A plus sign “+” indicates the presence of a taxon at a locality.
Taxon Genus/species |
Locality | |||
Hoisington | Braun Ranch | Rose Creek | Courtland | |
Crassidenticulum decurrens | + | + | + | |
Crassidenticulum cracendentis | + | |||
Crassidenticulum trilobum | + | + | ||
Crassidenticulum cf. trilobum | + | |||
Crassidenticulum landisiae | + | |||
Yangia glandifolia | + | |||
Densinervum kaulii | + | + | ||
Landonia calophylla | + | |||
Landonia callii | + | |||
Aquatifolia fluitans | + | |||
Brasenites kansense | + | |||
Longstrethia varidentata | + | |||
Longstrethia aspera | + | |||
Pabiania variloba | + | + | ||
Setterholmia rotundifolia | + | |||
Setterholmia deleta | + | |||
Manchesterii macrophylla | + | |||
Pandemophyllum kvacekii | + | + | ||
Pandemophyllum attenuatum | + | + | ||
Pandemophyllum sp. | + | |||
Rogersia dakotensis | + | + | ||
Rogersia parlatorii | + | + | ||
Rogersia lottii | + | |||
Wolfiophyllum daphneoides | + | |||
Wolfiophyllum heigii | + | |||
Wolfiophyllum pfaffianum | + | + | ||
Jarzenia kanbrasota | + | + | ||
New genus A | + | |||
Liriophyllum siemii | + | |||
Liriophyllum kansense | + | |||
cf. Paleonelumbo macroloba | + | |||
Credneria quadrata | + | |||
Credneria cyclophylla | + | + | ||
Dischidus quinquelobus | + | |||
Eoplatanus serrata | + | |||
Aspidiophyllum denticulatum | + | |||
Sapindopsis powelliana comb. nov. | + | |||
Sapindopsis retallackii sp. nov. | + | |||
Anisodromum wolfei | + | + | ||
Anisodromum upchurchii sp. nov. | + | |||
Anisodromum schimperi comb. nov. | + | |||
Citrophyllum doylei | + | |||
Citrophyllum aligera | + | |||
Trochodendroides rhomboideus | + | |||
Trochodendroides elliptica | + | |||
Wingia expansolobum comb. nov. | + | + | ||
Wingia cf. expansolobum | + | |||
Acritodromum ellipticum | + | |||
Crepetii minudentis | + | |||
Didromophyllum basingerii | + | |||
Glandilunatus kansense | + | + | ||
Gooleria crasseprima | + | |||
Hickeyphyllum sandersii | + | |||
Hickeyphyllum imhofii | + | |||
Kladoneuron gooleri | + | |||
Reynoldsiophyllum masonii | + | |||
Reynoldsiophyllum nebrascense | + | |||
New genus B | + | |||
Dicotylophyllum aliquantuliserratum | + | |||
Dicotylophyllum angularis | + | |||
Dicotylophyllum braunii | + | |||
Dicotylophyllum carlsonii | + | |||
Dicotylophyllum coughlantii | + | |||
Dicotylophyllum fragile | + | |||
Dicotylophyllum huangii | + | |||
Dicotylophyllum leptovenum | + | + | ||
Dicotylophyllum myrtophylloides | + | |||
Dicotylophyllum rosafluviatilis | + | |||
Dicotylophyllum skogii sp. nov. | + | |||
Dicotylophyllum tulipiferum | + | |||
70 | 24 | 21 | 21 | 20 |
TABLE 2. Comparisons of leaf shape and venation of Rogersia and Wolfiophyllum species (modified from table 1 of Wang and Dilcher, 2009).
Taxon | Leaf shape | 2º venation | Number of 2º veins | Loops near margin | Intercostal region | Intersecondary veins | Tertiary veins |
Wolfiophyllum pfaffianum | very narrow elliptic | eucamptodromous | 8 | no | no | common | reticulate |
Wolfiophyllum heigii | lorate or linear | eucamptodromous | 10 to 12 | no | no | present | percurrent or exmedially ramified |
Wolfiophyllum daphneoides | narrow ovate to lanceolate | eucamptodromous | 5 to 7 | no | no | common, simple | Not observed |
Rogersia dakotensis | linear oblong | brochidodromous | >10 | two series, elongate area | well defined | present | percurrent, more or less irregular |
Rogersia lottii | narrow elliptic | festooned brochidodromous | 10 | one series | well defined | present, simple | random reticulate |
Rogersia parlatorii | oblong, lorate to linear | brochidodromous | >10 | irregular | elongate and admedially oriented | common | intergrading with 2º and 4º |
TABLE 3. List of quillworts, ferns, and conifers from the Hoisington III locality, Kansas.
Taxa | Organ | References | |
Quillworts | Isoëtites phyllophila Skog, Dilcher and Potter | Rhizome | Skog et al. (1992), Skog and Dilcher (1994) |
Ferns | Anemia dicksoniana (Heer) Krassilov | Leaf | Skog and Dilcher (1994) |
Anemia dakotensis (Rushforth) Skog and Dilcher | |||
Gleichenia camptoniaefolia Debenham and Ettinghausen) Heer | |||
Gleichenia delicatula Heer | |||
Matonidium brownii Rushforth | |||
Marsilea* johnhallii Skog and Dilcher | Skog and Hill (1992), Skog and Dilcher (1994); *Hermsen et al. (2014) emended the generic name to Marsileaceaephyllum | ||
Conifers | Pinus sp. | Leaf (needle fragments) | Mihai E. Popa (in preparation) |
Peltaconus conditus Lesquereux | Seed cone | ||
? Pityanthus | Pollen cone | ||
Brachyphyllum crassum (Lesquereux) Lesquereux | Leaf | ||
Geinitzia sp. | |||
? Athrotaxites sp. B |