Missing pickers in specification?

I am trying to find a specification for date/time pickers in Material Design. Has date/time pickers been removed from the Material Design specification?

I can't seem to find it, multiple implementations have links to the material.io page, which seem to be dead links.

See: https://materialdoc.com/components/pickers/

Which has a dead-link to: https://material.io/guidelines/components/pickers.html#pickers-date-pickers