Looks like someone made a part because there is a FZ BB and SCH view, the problem is finding it. It could be a part(.fzpz), or in a sketch(.fzz), or in MediaTek bin(.fzp), LinkIt One bin, SeedStudio bin, who knows. Even the BB svg would be enough because the other views aren’t that hard.
Looking at it it looks like a UNO header pin pattern on a MEGA2560 PCB. Do you have one to measure the length - I think all Ardunios are the same width -. The MEGA is 101.5mm longest length.
Found the datasheet and it’s 3.3" x 2.1" or 83.82mm x 53.34mm, shorter tha MEGA.