Paraconcavistylon wehrii is known from specimens which were recovered from outcrops of the early Eocene, Ypresian Klondike Mountain Formation in Republic[1][2] and coeval McAbee Fossil Beds near Cache Creek, British Columbia.

[1] The plant community preserved in the Klondike Mountain formation is a mixed conifer–broadleaf forest with large pollen elements of birch and golden larch, but also having notable traces of fir, spruce, cypress, and palm.

[1] The holotype was originally collected by Dwyane Day 1999 and subsequently donated to the University of Washington's Burke Museum as specimen UWBM PB 101336.

Study of the fossil by paleobotanists Steven Manchester et al resulted in the description of "Concavistylon" wehrii being published in 2018, 117 years after the Landis specimen was found.

The holotype of Paraconcavistylon has been described as a Rosetta Stone fossil as it bears an infructescence attached to branchlet that also has leaves and terminal buds connected, allowing for a fuller plant description than is usually possible.

Additionally the species Trochodendron drachukii is known from related Kamloops group shales at the McAbee Fossil Beds near Cache Creek, British Columbia.

They have a slight thickening in the basal area where a ring of perianth scars encircling the connection with the pedicel is, but are widest near the fruit apex.

They have regularly spaced teeth along the margin that are rounded and bearing glands, and a few specimens from the McAbee site also have distinct laminal lobes bracketing the petiole.