SHARK VS SHARK

CretoxyrhinavsSqualicorax

Length, weight and bite evidence—plus context from a human, city bus and blue whale. Every number below carries its uncertainty with it.

ExtinctCretoxyrhina mantelli×ExtinctSqualicorax pristodontus
QUICK VERDICT

Cretoxyrhina is about 1.40× longer by these reference values.

Cretoxyrhina uses a 7 m upper reference, compared with 5 m for Squalicorax. A clean mass ratio is not shown because at least one weight is not reliably reconstructed.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ACretoxyrhinaestimated to about 7 m / 23 ft
BSqualicoraxestimated to about 5 m / 16 ft
REFAdult human1.8 m · about 80 kg

Length bars use upper comparison values and do not show body depth, tail proportion or typical adult size. A long thresher tail, for example, does not equal whale-shark body mass.

02

THE NUMBERS

Side by side.

MeasureCretoxyrhinaSqualicorax
Length referenceestimated to about 7 m / 23 ftestimated to about 5 m / 16 ft
Weight referenceNot reliably reconstructedNot reliably reconstructed
Bite forceNo defensible estimate usedUnknownNo defensible estimate usedUnknown
Timeabout 107–73 million years agoabout 85–66 million years ago
DietLarge fishes and marine reptilesFishes, marine reptiles and carrion
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Cretoxyrhina is represented by estimated to about 7 m / 23 ft; Squalicorax by estimated to about 5 m / 16 ft. Length is reconstructed from fossils; mass is too model-dependent for a single figure here. Body length and ecology are reconstructed from incomplete fossil evidence.

Bite evidence

Cretoxyrhina: TuffShark does not scale a bite value without a published species-specific model. Squalicorax: Bite traces show feeding, not maximum force.

Living versus extinct

At least one animal is known from fossils. Fossil length, weight and bite estimates depend on which living analogues and scaling equations researchers choose.

Ecology changes the matchup

Teeth and rare skeletal material point to a large, fast lamniform predator. Serrated teeth and bite traces show a broad, opportunistic diet.

04

TRACE THE CLAIMS

Sources and limits.

CretoxyrhinaSmithsonian National Museum of Natural HistorySqualicoraxPaleobiology DatabaseHow we standardize comparisonsRead the methodology →