I have Sigma Camera Lenses and was wondering what cameras they would work on?

Sigma 28-90mm F3.5-5.6 Macro and 70-300 mm F4-5.6 Macro Super
They formerly fit on a Nikon N65. What digital cameras would they fit on?

Added (1). Which cameras would that include? Would they fit a D3000 or D3100?
Additional Details
They are CPU lenses, they are type D with the aperture ring. The numbers on the lense are 70-300mmD1:4-5.6 On the N65 they are auto focus and manual focus. They have the 5 pin mount.
Does anyone know what cameras are higher than a D80?

The bayonet mounts for those lenses will make them adaptable to pretty much any 35mm SLR camera, including 35mm DSLR cameras. The only issue is you'll have to focus everything manually. If you don't mind doing that, no harm no foul.

I'm not a combat camera vet or whatever but, I happen to own several older Nikon 35mm cameras that I shot when I was growing up. A lot of that gear is older than I'm and was handed down to me. What I can tell you from that experience is that Nikon has retained the same basic lens mount since 1959.

So, if your lenses fit the Nikon N65, they will fit ANY current Nikon DSLR or any other Nikon 35mm camera. The only issue you are likely to face is the lack of autofocus capability with entry level Nikons (such as the D3100) that lack internal AF motors. The mid-range D90, D7000 and higher end models like the D300s and D700 all have internal AF motors to drive the autofocus mechanisms of older Nikon/Nikkor lenses and should be able to autofocus with your older Sigma lenses which feature similar, gear-driven AF mechanisms.

Modern camera lens mounts are proprietary. Nikon for Nikon, Canon for Canon, Pentax for Pentax and so on. You can't, without the aide of an adapter, mount a Nikon lens on a Canon body or vice versa. In the event you do choose to do this, the lens will be manual focus only and most of the camera's automatic exposure capabilities will be disabled while that lens is attached.

They will fit on any Nikon DSLR. They will meter & autofocus with a D50, D70, D80, D90, D7000, D100, D200, D300, D1, D2, D3, or any other their S and X variations.

I've used Nikon mount OEM and 3rd party lenses from my old film days on my D200 & D300 perfectly, as Nikon has wisely made their cameras all backwards compatible to some degree, and fully compatible with their semi-pro and professional models.