SHARK VS SHARK

CretoxyrhinavsLemon 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×LivingNegaprion brevirostris
QUICK VERDICT

Cretoxyrhina is about 2.3× longer by these reference values.

Cretoxyrhina uses a 7 m upper reference, compared with 3 m for Lemon 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
BLemon sharkcommonly to 3 m / 10 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.

MeasureCretoxyrhinaLemon shark
Length referenceestimated to about 7 m / 23 ftcommonly to 3 m / 10 ft
Weight referenceNot reliably reconstructedreported to 250 kg / 551 lb
Bite forceNo defensible estimate usedUnknownNo dependable maximum foundUnknown
Timeabout 107–73 million years agoShallow subtropical coasts and mangroves
DietLarge fishes and marine reptilesFishes, rays and crustaceans
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; Lemon shark by commonly to 3 m / 10 ft. Length is reconstructed from fossils; mass is too model-dependent for a single figure here. The values are upper-end figures, not a typical adult profile.

Bite evidence

Cretoxyrhina: TuffShark does not scale a bite value without a published species-specific model. Lemon shark: No standardized maximum is available for a fair cross-species comparison.

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. Decades of field research make this one of the best-studied coastal sharks.

04

TRACE THE CLAIMS

Sources and limits.

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