Sorry to hear that you lost them Dayna. Temps might have been a (the ?) problem, but having had my share of bad experiences, along with a good dose of good experiences with baby quads and other species, I wonder about how much preformed vitamin A the mother received prior to and during the time she was gravid, in addition to what her overall health was like during that time.
I'm convinced that some of the babies I lost, especially when I would lose an entire clutch in such a short period of time, was directly related to the female not receiving enough preformed A during the time she was developing eggs. I'm very wary of the supplements that contain not only vitamin A but those that combine it with D3, because, in my experience, D3 seems to be more problematic in contributing to organ malfunction (resulting in gular edemas) than is preformed A.
Even though I had read about the study which showed that providing some preformed vitamin A resulted in a much higher hatch rate in panther chameleons, and even though I had read both articles in the Chameleon Information Network at the time they were printed (the second of which concluded that preformed A was not the whole answer in why many keepers were experiencing edemas with their chameleons, especially montane species, but that D3 might be a more likely culprit; a follow-up controlled study was never conducted by the author, John Annis, at least to my knowledge), the fear of overdosing my chameleons on preformed vitamin A so overwhelmed me that I avoided it almost entirely.
It took many years, but I finally came around and started consistently using preformed A on my breeding sized females, a single drop from a gel-tab once a month. Ever since, when I've been consistent in providing that, I've had much better results, not only in the percentage of eggs that hatch but in the survivability of the neonates.
I'm not saying that the health of the mother or a possible low level of preformed A in her system is the reason you lost your babies so suddenly, it may not even be part of the answer, but it is worth considering. The neonates may have been doomed from the start even though by outward appearances they seemed fine, active and eating well. Just a thought.
Perry