An atlas of the 570 k-uniform Krötenheerdt honeycombs of Euclidean 3-space: the face-to-face honeycombs by unit-edge convex uniform polyhedra whose vertices fall into exactly k orbits carrying k pairwise distinct vertex stars. Each class is drawn in 3D from its certified realization and identified by its minimal Delaney–Dress symbol. The atlas needs JavaScript to draw them.
The number of such honeycombs is 28, 57, 119, 146, 122, 78, 18 and 2 for k = 1 to 8, and 0 from k = 9 on. The planar Krötenheerdt sequence, 11, 20, 39, 33, 15, 10, 7 and then 0, sits inside it: every planar tiling appears as its prismatic lift, and the three-dimensional sequence vanishes one row after the planar one.