Xenodens
Xenodens was a mosasaur, a giant marine lizard that lived in the sea during the time of dinosaurs. It had a mouth full of flat, blade-like teeth that worked like a saw, just like a shark or a piranha. This helped it slice through fish, squid, and even other sea creatures.1
Kañ la dundoon?
Naka la réyoon?
Naka la guddoon?
gudd ni 2 muusu kër, bakkan ba geen🍌gudd ni 6 banaana yu ñu topp-toppale🏊mënoon na féey guddaayu pisin bu mag (50 m) ci 14 segondNaka la Xenodens réyoon, bu ñu ko méngalee ak YAW?
Ay kalkil rekk ci sa navigatëer. Dara du ñu denc, dara du ñu yónne fenn.
Naka la gaawoon?
Xibaar yu neex
Xenodens means 'strange tooth' in Greek and Latin, and its species name calminechari means 'like a saw' in Arabic.1
Its teeth were short, flattened, and blade-like, forming a saw-like edge along the jaw. No other land or sea reptile had teeth like this.1
Xenodens lived about 72 to 66 million years ago, near the end of the Age of Dinosaurs.2
Scientists first described Xenodens in 2021 from two upper jaw bones found in a phosphate mine in Morocco.1
Some scientists thought the fossil might be a fake, but CT scans in 2025 showed the teeth were real and naturally attached.1
Xenodens was small for a mosasaur, only about 1 meter (3.3 feet) long. Many other mosasaurs were much bigger.1

Laaj yi ñu gën a laaj ci Xenodens
?Was Xenodens a dinosaur?
No, Xenodens was a mosasaur, a marine lizard that lived in the sea during the time of dinosaurs.1
?How big was Xenodens?
About 1 meter (3.3 feet) long, which is small for a mosasaur.1
?What did Xenodens eat?
It likely ate fish, squid, crustaceans, and scavenged dead marine reptiles, using its saw-like teeth to slice through food.1
?Why did Xenodens have strange teeth?
Its short, flattened, blade-like teeth formed a saw-like edge, similar to dogfish sharks and piranhas, for cutting prey.1
Ku tas léeb yu dul dëgg
Léeb: Xenodens was a dinosaur.
Dëgg: Xenodens was a mosasaur, a type of marine lizard that lived in the ocean. Mosasaurs are not dinosaurs.1
Ngir ñi xam dino lool
- Turu xam-xam
- Xenodens
- Ku ko tudde
- Longrich et al. 20212
- Kurél
- Mosasoor yi
- Njaboot / klad
- Mosasauridae2
- Klasifikasiyoŋ
- Mosasauroidea2
- Màggaayu doj yi
- 72 ba 66 milyoŋ at (Maastrichtian)2
- Formasiyoŋi doj
- Couche III2
- Réew yi
- Marog2
- Fosil yu ñu gis
- 1 ci The Paleobiology Database2
- Gisees
- Xenodens was named in 2021 by Nick Longrich and colleagues based on a left upper jaw bone bought from a local farmer in Morocco. The fossil came from the Sidi Chennane phosphate mine.1
- Ñu ngi koy werante ba tey
- Some scientists still debate whether Xenodens is a real species or a fake fossil, though CT scans support its authenticity.1
Fa xibaar yi jóge
- Xenodens (en.wikipedia.org)
- Xenodens in The Paleobiology Database (CC BY 4.0): at, béréb yi, formasiyoŋi doj, klasifikasiyoŋ.
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