The pubis and ischium are likely to be longer than the ilium, protruding out beneath the tail.
From the en.wikipedia.org
The diagonal fracture in the ischium bone of a Venenosaurus suggests the break occurred when the bone was still fresh.
From the sciencedaily.com
It includes a narrow ilium and long ischium.
From the en.wikipedia.org
The pelvis has an open ilio-ischiadic fenestra that incises the posterior edge between the ilium and ischium, as in all paleognathes.
From the en.wikipedia.org
The dorsal extension of the pelvis was the ilium, while the broad ventral plate was composed of the pubis in front and the ischium in behind.
From the en.wikipedia.org
For instance, it has a long ascending process of the ankle bone, interdental plates, an obturator process of the ischium, and long chevrons in the tail.
From the en.wikipedia.org
You call yourself DoctorY, but I guarantee you have no MD, since you obviously don't know your ischium from your ulna, and its clear you've never had match day.
From the latimes.com
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One of the three sections of the hipbone; situated below the ilium
The ischium forms the lower and back part of the hip bone (os coxae). The word comes from the Greek ischion, meaning "hip." (Taber's, 1985).
(Ischial) In human anatomy, the pelvis (plural pelves or pelvises) is the part of the trunk inferioposterior (below-behind) to the abdomen in the transition area between the trunk (torso) and the lower limbs (legs). ...
The lowest of the three bones that make up each side of the pelvis
Bone making up the lower down back part of the pelvis.
First (proximal) segment of the endopod of crustacean thoracic appendages
The lower portion of the hipbone, which sometimes protrudes from the pelvis and may get sore while sitting on a hard surface for extended periods of time.