|Barosauras lentus rearing: mounted skeleton at AMNH|
Photo by Greg CC BY 2.0
One of his conclusions is that if Barosaurus reared its head (as in the exhibit above) its mean arterial blood pressure would have been 700 mmHg and the left ventricle of the heart would have weighed a metric ton. The heart would have filled the chest and its thick wall been so stiff as to consume a huge amount of energy.
|Diplodocus carnegii in the hall of the Natural History Museum in |
South Kensington (now removed). Photo by Drow male CC BY-SA 4.0
Sauropods are generally regarded as terrestial because of skeletal features, but perhaps they retained these because they needed to go on land to lay their eggs!
|Dinocephalosaurus a live-bearing archosauromorph|
From Liu et al. 2017