| All too often books written for a popular audience include animals such as mammoths, mastodons, plesiosaurs, ichthyosaurs, and the sail-backed Dimetrodon. |
| There are also the fossils of marine reptiles such as mesosaurs, ichthyosaurs and mosasaurs. |
| These in turn fall victim to the snapping jaws of small to medium-sized ichthyosaurs, marine reptiles not unlike modern dolphins, and averaging some 3 meters in length. |
| Belemnite hooks are commonly found in the fossilized stomachs of marine reptiles that preyed upon them, such as ichthyosaurs. |
| The earliest ichthyosaurs had long, flexible bodies and probably swam by undulating, like living eels. |
| There were already air breathing reptiles in the sea in the form of plesiosaurs, nothosaurs, ichthyosaurs, you know, so that niche if you like was kind of locked off to them. |
