You'll have to have a little patience with me on this one, but its worth it. My sister-in-law is Swedish, and she sent me this link that is in, of course Swedish.
What the article said was: "This is how a horse is made -see the fantastic pictures." They are photos of embryonic horses at days 10, 30, 65, and 85. I love the day 85 picture. I have pictures of one of my '08 foals lying almost exactly like that when she was bout 6 hours old.