# Plesiosaurus (*Plesiosaurus dolichodeirus*)

Plesiosaurus was a powerful marine reptile that swam the ancient seas using flippers and a streamlined body.

- **Category:** [Ancient](https://www.snappit.app/explore/categories/ancient)
- **Rarity:** Common
- **Danger:** 1/5 · Very low
- **Habitat:** Mesozoic oceans and coastal waters
- **Also known as:** Plesiosaur

![Plesiosaurus](https://res.cloudinary.com/drieglelr/image/upload/v1771424353/objects/5800.jpg)

## Appearance

The Plesiosaurus has a strikingly long neck and a small, pointed head, balanced by a broad, turtle-like body. It moves through ancient seas using four large, powerful paddle-like flippers. Its smooth skin was likely a camouflaging blend of dark blues or greens.

## Taxonomy

- **Kingdom:** Animalia

## Interesting facts

- Imagine a turtle with a snake's neck – that's a Plesiosaurus!
- Its name means 'near lizard', as early scientists thought it was almost a lizard!
- They had needle-sharp teeth, perfect for snatching slippery fish!
- This ancient swimmer's bones were first found over 200 years ago!

## Special abilities

- **Paddle Power:** Plesiosaurus can glide gracefully through the water using its four powerful paddle-like flippers that help them steer and propel with ease.
- **Long-Necked Lunge:** Plesiosaurus has an incredibly long and flexible neck that helps them ambush speedy fish from a distance without moving its large body.
- **Deep Dive Breather:** Plesiosaurus can hold its breath for long periods, allowing them to hunt for prey deep beneath the ocean surface.

## Measurements & details

- **Length:** 3-5 m
- **Weight:** 200-450 kg
- **Era:** Early Jurassic
- **Extinct Millions Years Ago:** 190

## Diet & Feeding

This ancient marine hunter mostly munched on slippery fish and squid in the Jurassic seas.

- **Primary Foods:** Fish, Ammonites, Belemnites
- **Foraging Method:** Ambush

## Ecological connections

- **Eats:** Small Jurassic Fish (*Leptolepis coryphaenoides*) — A swift swimmer, often caught by Plesiosaurus.
- **Eats:** Jurassic Belemnite (*Hibolithes hastatus*) — These ancient squid-like creatures were a key food source.
- **Eaten by:** Large Ichthyosaur (*Temnodontosaurus platyodon*) — A much larger marine reptile that might hunt young Plesiosaurus.
- **Eaten by:** Jurassic Pliosaur (*Rhomaleosaurus cramptoni*) — This powerful predator likely targeted Plesiosaurus.

## Traits

- [Ancient](https://www.snappit.app/explore/traits/ancient): Ancient refers to organisms, objects, or geological formations that have existed for an extremely long period.
- [Artifact](https://www.snappit.app/explore/traits/artifact): An artifact is an object made or modified by human culture, typically of historical or archaeological interest.
- [Fossil](https://www.snappit.app/explore/traits/fossil): A fossil is the preserved remains or traces of an ancient organism embedded in rock or other geological deposits.

## Collections

- [Ancient](https://www.snappit.app/explore/collections/ancient)

## Safety

**Danger:** 1/5 · Very low

While extremely dangerous in their time, this creature is now extinct.

## Frequently Asked Questions

### How to identify Plesiosaurus?

Compare skull shape, horns, plates, limbs, posture and tail. Museum models and toys can mix features or follow outdated reconstructions. Dinosaur Identifier: upload a photo and compare the visible details.

### How long is Plesiosaurus?

3-5 m

### How much does Plesiosaurus weigh?

200-450 kg

### What does Plesiosaurus eat?

This ancient marine hunter mostly munched on slippery fish and squid in the Jurassic seas.

### Where is Plesiosaurus usually found?

Mesozoic oceans and coastal waters

### How does Plesiosaurus hunt?

Ambush

### What geologic era did Plesiosaurus live in?

Early Jurassic

### When did Plesiosaurus go extinct?

190

## More Ancient

- [Tyrannosaurus rex](https://www.snappit.app/explore/tyrannosaurus-rex) (*Tyrannosaurus rex*)
- [Triceratops](https://www.snappit.app/explore/triceratops) (*Triceratops horridus*)
- [Stegosaurus](https://www.snappit.app/explore/stegosaurus) (*Stegosaurus stenops*)
- [Brachiosaurus](https://www.snappit.app/explore/brachiosaurus) (*Brachiosaurus altithorax*)

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Source: [Plesiosaurus: Facts & Places to See — Snappit](https://www.snappit.app/explore/plesiosaurus)