Which animal has changed the least since the age of the dinosaurs?

Some of these bodies were already old news when the first dinosaurs hatched; others merely outlived them. Pick the design evolution never bothered to update.

1. 1
   Coelacanth

   Lobe-finned deep-sea fish thought extinct for 66 million years until one surfaced in a South African net in 1938.
   1000pts
2. 2
   Horseshoe Crab

   Helmet-shaped arthropod that has crawled coastal shallows for more than 400 million years, closer kin to spiders than crabs.
   897pts
3. 3
   Goblin Shark

   Deep-water shark with a blade-like snout and slingshot jaws, last of a family dating to the Cretaceous.
   717pts
4. 4
   Cockroach

   Flattened scavenger insect whose basic form dates back more than 300 million years.
   717pts
5. 5
   Triops

   Three-eyed tadpole shrimp of temporary pools, often called the oldest living animal design on Earth.
   636pts
6. 6
   Velvet Worm

   Soft-bodied, slime-squirting predator that has looked much the same since the Cambrian.
   538pts
7. 7
   Dragonfly

   Four-winged aerial hunter whose giant ancestors patrolled Carboniferous swamps long before the first dinosaur.
   538pts
8. 8
   Tuatara

   New Zealand reptile and sole survivor of an order that flourished alongside the earliest dinosaurs.
   538pts
9. 9
   Sturgeon

   Bony-plated river fish with a lineage reaching back some 200 million years, still spawning in the same way.
   418pts
10. 10
    Alligator Gar

    Toothy, armour-scaled North American fish that looks almost identical to gars from the Cretaceous.
    418pts
11. 11
    Hagfish

    Slime-producing, jawless scavenger of the deep sea with fossils 300 million years old that look just like it.
    418pts
12. 12
    Alligator

    Broad-snouted crocodilian of the American South, built much like relatives that watched the dinosaurs die out.
    0pts
13. 13
    Nautilus

    Spiral-shelled cephalopod whose chambered shell design has persisted for roughly 500 million years.
    0pts
14. 14
    Lamprey

    Jawless, eel-like fish with a sucker mouth, essentially unchanged for about 360 million years.
    0pts
15. 15
    Frilled Shark

    Eel-shaped shark with frilly gill slits whose modern form matches fossils around 80 million years old.
    0pts
16. 16
    Crocodile

    Armoured river predator whose body plan has barely shifted since crocodilians first appeared in the Triassic.
    0pts
17. 17
    Platypus

    Egg-laying, duck-billed mammal from a group that split off before the dinosaurs reached their peak.
    0pts

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