SHARK VS SHARK

CretoxyrhinavsFrilled 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×LivingChlamydoselachus anguineus
QUICK VERDICT

Cretoxyrhina is about 3.5× longer by these reference values.

Cretoxyrhina uses a 7 m upper reference, compared with 2 m for Frilled 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
BFrilled sharkabout 2 m / 6.6 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.

MeasureCretoxyrhinaFrilled shark
Length referenceestimated to about 7 m / 23 ftabout 2 m / 6.6 ft
Weight referenceNot reliably reconstructedlarge-adult reference about 15 kg / 33 lb
Bite forceNo defensible estimate usedUnknownNo dependable maximum foundUnknown
Timeabout 107–73 million years agoDeep continental slopes
DietLarge fishes and marine reptilesSquid, fishes and small sharks
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; Frilled shark by about 2 m / 6.6 ft. Length is reconstructed from fossils; mass is too model-dependent for a single figure here. Deepwater records remain limited.

Bite evidence

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

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 body plan looks ancient, but living frilled sharks are modern species—not unchanged fossils.

04

TRACE THE CLAIMS

Sources and limits.

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