The study of the internal structure of organisms.

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Where are the gastralia (stomach ribs) attached?

Crocodiles and some dinosaurs have a second set of ribs between the sternum and pelvis called gastralia. Where are the gastralia attached to the rest of the skeleton?
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Where can I find the details of kinematics data, physical parameters, and anatomical data of the forelimbs and hindlimb of a kind of horse?

Now, I am doing a simulation of horses, and some basic data, such as weight, height, species should be obtained to model a virtual horse. I am a student of engineering, and want to find some ...
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Why are there no animals with a length greater than 30-40 meters or with a mass greater than 200 tonnes?

The biggest and heaviest aquatic animal is the blue whale: 30 meters long and a mass of 200 tonnes. The biggest and heaviest terrestrial animal was a Sauropod (plant-eating, long-necked dinosaur): 40 ...
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Extant Bipedal Primates

How many extant bipedal primates are known? I got one answer, I believe, after searching Google with the following search string: ...