SHARK VS SHARK

CretoxyrhinavsZebra 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×LivingStegostoma tigrinum
QUICK VERDICT

Cretoxyrhina is about 1.98× longer by these reference values.

Cretoxyrhina uses a 7 m upper reference, compared with 3.54 m for Zebra 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
BZebra sharkreported to 3.54 m / 11.6 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.

MeasureCretoxyrhinaZebra shark
Length referenceestimated to about 7 m / 23 ftreported to 3.54 m / 11.6 ft
Weight referenceNot reliably reconstructedlarge-adult reference about 35 kg / 77 lb
Bite forceNo defensible estimate usedUnknownNo dependable maximum foundUnknown
Timeabout 107–73 million years agoTropical Indo-Pacific reefs and sand flats
DietLarge fishes and marine reptilesMollusks, crustaceans and fishes
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; Zebra shark by reported to 3.54 m / 11.6 ft. Length is reconstructed from fossils; mass is too model-dependent for a single figure here. Its very long tail adds substantially to total length.

Bite evidence

Cretoxyrhina: TuffShark does not scale a bite value without a published species-specific model. Zebra shark: No standardized maximum is used.

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. Juveniles have stripes; adults are spotted despite the common name.

04

TRACE THE CLAIMS

Sources and limits.

CretoxyrhinaSmithsonian National Museum of Natural HistoryZebra sharkFlorida MuseumHow we standardize comparisonsRead the methodology →