Chito's crocodile:

Chito's crocodile was supposed to be blind!!
--xx--

Anyway, it's there on the web about crocodiles going through elaborate courtship and then takes them 15 minutes to complete the act. That is excluding the time for moving the tail out of the way, grabbing with both fore and hind paws and aligning up. Then it's 15 minutes of sea-saw in the water as they both come up for air and then submerge in rhythm with the locomotion.

In comparison elephants have duration's of less than a minute.
"Cause there's no pelvic movement involved" - explains Wiki.

Now before i raise the question, recall a few facts,

that crocodiles go back some 200 million years
while as we know the elephant is relatively a younger species

the crocodile brain is small: size of an orange
and the elephant has a massive brain: 3 times the size of man
(brain size could be inversely relevant (?)

So the question is: what would have been the duration for sex
if this sauropod was mating???
Keep in mind, this fella is also "lizard hipped", about 20 times the size of a crocodile and so forth.