Albertosaurines are characterized by more slender builds, lower skulls, and proportionately longer tibiae than tyrannosaurines.

In 1937, Alfred Sherwood Romer described a second species from New Mexico named Sphenacodon ferocior ("fiercer") that was larger and more robust, with proportionately longer neural spines.

Males are longer, with proportionately longer tails.

Barosaurus had proportionately longer forelimbs than other diplodocids, although they were still shorter than most other groups of sauropods.

The Greater Crested often associates with the Lesser Crested Tern, but is 25% larger than the latter, with a proportionately longer bill, longer and heavier head, and bulkier body.

The Indo-Pacific bottlenose dolphin is generally smaller than the common bottlenose dolphin, has a proportionately longer rostrum, and has spots on its belly and lower sides.

It also had a proportionately longer humerus, a broader and shorter skull, and having longer and lower nostrils from the Red Rail, from which it differed considerably in plumage, based on early descriptions.

Part-time veteran students receive less, but for a proportionately longer period.

She is darker and more slender than the hen of that species, with a proportionately longer tail (half her 60-80 cm length).

It's thought it may have resembled Camarasaurus, albeit with proportionately longer forelimbs.