Angiospermae - Rosales - Ulmaceae

Full reference: D.P. Penhallow. 1907. A report on fossil plants from the International Boundary Survey for 1903–1905, collected by Dr. R A Daly. Proceedings and Transactions of the Royal Society of Canada 1(4):287-351

Belongs to Ulmus according to F. H. Knowlton 1919

Sister taxa: Ulmus affinis, Ulmus alata, Ulmus americana, Ulmus antecedens, Ulmus basicordata, Ulmus betuloides, Ulmus braunii, Ulmus brownellii, Ulmus californica, Ulmus campestris, Ulmus chuchuanus, Ulmus columbianus, Ulmus dubia, Ulmus fernquisti, Ulmus grandifolia, Ulmus hilliae, Ulmus macrocarpa, Ulmus maguanensis, Ulmus minima, Ulmus newberryi, Ulmus okanaganensis, Ulmus orbicularis, Ulmus parvifolia, Ulmus planeroides, Ulmus plurinervia, Ulmus praecursor, Ulmus prelanceaefolia, Ulmus protoamericana, Ulmus protoracemosa, Ulmus pseudoracemosa, Ulmus pumila, Ulmus quercifolia, Ulmus racemosa, Ulmus rhamnifolia, Ulmus sorbifolia, Ulmus speciosa, Ulmus tenuinervis, Ulmus wallichiana, Ulmus wardii

Type specimen: 250/c, a wood. Its type locality is Kettle River , which is in an Eocene terrestrial shale in the Kettle River Formation of Canada.

Ecology: "photoautotroph"

Distribution: found only at Kettle River

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Specimen images are retrieved through the ePANDDA API.