English: a, b Main slab (a) and counter slab (b) of the Tynskya eocaena holotype from the North American Green River Formation (SNSB-BSPG 1997 I 6); note that most limb bones of the counter slab have been fabricated by the preparator of the fossil. c‒p Partial skeleton of Tynskya waltonensis sp. nov. from the early Eocene London Clay of Walton-on-the-Naze, Essex, UK (SMF Av 652); all bones are from a single individual, unidentifiable or uninformative fragments preserved in the specimen are not shown; c mandible, d left quadrate, e vertebrae, f left coracoid, g, h left and right scapula, i furcula, j fragment of sternum, k right humerus, l distal end of left ulna, m proximal end of right radius, n partial left carpometacarpus, o proximal end of left femur, p left os metatarsale I and pedal phalanges. Scale bars equal 20 mm for a and b and 5 mm for c‒p