S. thiollierei had 22 back and neck vertebrae , while S. laticeps had 26 .
Sapheosaurus laticeps ( also known as Piocormus ) differed from Sapheosaurus thiollierei by its smaller size and more vertebrae .
Sapheosaurus thiollierei   had 22 back and neck vertebrae , while S. laticeps had 26 .
Sapheosaurus laticeps ( also known as Piocormus ) differed from Sapheosaurus thiollierei by its smaller size and more vertebrae .