Seems very likely I have seen this befoer as I remember encountering similar and discarding it in the belief I would never ID it. It's an adult hibernator.
I have found what was probably this earlier this year already but immature and unkeyable. Not sure what these paddles are for but what millipedes get up to in the privacy of their own logs is their own affair.
Used to be called Dasyscyphus, and named as such in both Ellis&Ellis and Dennis. In reality the clavate hairs are probably a marker for this not really belonging to that genus but first impressions certainly are that it is one. Substrate is one lone spruce needle. Sometimes it's really a small world.
The numbers bit:
|285||Nemastoma bimaculatum||A harvestman|
|286||Cygnus olor||Mute Swan|
|287||Empoasca vitis||A leafhopper|
|288||Cistella acuum||An ascomycete|
|289||Julus scandinavius||A millipede|
|290||Tachypodoiulus niger||White-legged Snake Millipede|