Yes, it supports Ubuntu images, gets a list:
$ gcloud compute images list
NAME PROJECT FAMILY
...
ubuntu-1204-precise-v20160801 ubuntu-os-cloud ubuntu-1204-lts
ubuntu-1404-trusty-v20160627 ubuntu-os-cloud ubuntu-1404-lts
ubuntu-1604-xenial-v20160721 ubuntu-os-cloud ubuntu-1604-lts
...
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