SHARK VS SHARK

CretoxyrhinavsDwarf lanternshark

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×LivingEtmopterus perryi
QUICK VERDICT

Cretoxyrhina is about 33× longer by these reference values.

Cretoxyrhina uses a 7 m upper reference, compared with 0.21 m for Dwarf lanternshark. 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
BDwarf lanternsharkabout 0.21 m / 8.3 in
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.

MeasureCretoxyrhinaDwarf lanternshark
Length referenceestimated to about 7 m / 23 ftabout 0.21 m / 8.3 in
Weight referenceNot reliably reconstructedrough reference about 0.2 kg / 0.4 lb
Bite forceNo defensible estimate usedUnknownNo dependable maximum foundUnknown
Timeabout 107–73 million years agoDeep Caribbean slopes
DietLarge fishes and marine reptilesSmall 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; Dwarf lanternshark by about 0.21 m / 8.3 in. Length is reconstructed from fossils; mass is too model-dependent for a single figure here. Tiny sample sizes make the exact maximum provisional.

Bite evidence

Cretoxyrhina: TuffShark does not scale a bite value without a published species-specific model. Dwarf lanternshark: 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. One of the smallest known sharks also produces light.

04

TRACE THE CLAIMS

Sources and limits.

CretoxyrhinaSmithsonian National Museum of Natural HistoryDwarf lanternsharkSmithsonian OceanHow we standardize comparisonsRead the methodology →