SHARK VS SHARK

CretoxyrhinavsWhite shark

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×LivingCarcharodon carcharias
QUICK VERDICT

Cretoxyrhina is about 1.17× longer by these reference values.

Cretoxyrhina uses a 7 m upper reference, compared with 6 m for White shark. 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
BWhite sharkabout 6 m / 20 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.

MeasureCretoxyrhinaWhite shark
Length referenceestimated to about 7 m / 23 ftabout 6 m / 20 ft
Weight referenceNot reliably reconstructedreported to about 2,268 kg / 5,000 lb
Bite forceNo defensible estimate usedUnknownabout 18,000 NModeled
Timeabout 107–73 million years agoTemperate seas worldwide
DietLarge fishes and marine reptilesFish, rays and marine mammals
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; White shark by about 6 m / 20 ft. Length is reconstructed from fossils; mass is too model-dependent for a single figure here. Maximum length and mass are exceptional upper-end figures.

Bite evidence

Cretoxyrhina: TuffShark does not scale a bite value without a published species-specific model. White shark: A 3-D finite-element model predicted the bite of a very large individual; it was not measured on a living shark.

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. Its headline bite number is a computer model, not a live-animal measurement.

04

TRACE THE CLAIMS

Sources and limits.

CretoxyrhinaSmithsonian National Museum of Natural HistoryWhite sharkWroe et al. (2008) + Florida MuseumHow we standardize comparisonsRead the methodology →