Sauropod methane emission would probably also have been considerable.
Alternatively, they could have been sustained by intravenous drips that ran from alien spacecraft -- but "probably" is prudent...
Here, we use a simple quantitative approach to estimate the magnitude of such methane production
That is as opposed to my own favorite method -- the qualitative approach to estimation...
and show that the production of the greenhouse gas methane by sauropods could have been an important factor in warm Mesozoic climates.
I wonder if they exploded when caught in wildfires? The sauropods, that is...