ichthyosaur
/ˈɪkθɪəsɔː
/(also ichthyosaurus /ˌɪkθɪəˈsɔːrəs/)
noun
A fossil marine reptile of the Mesozoic era, resembling a dolphin with a long pointed head, four flippers, and a vertical tail.
- Order Ichthyosauria, subclass Diapsida: numerous genera, including Ichthyosaurus.
- Vertebrate remains include isolated skeletal elements and tooth plates of palaeonisciform and actinopterygian fish, as well as body fossils of ichthyosaurs and other marine reptiles.
- More distantly related to true dinosaurs were the marine plesiosaurs and ichthyosaurs.
Origin
Mid 19th century: from ichthyo- 'fish' + Greek sauros 'lizard'.
- unassumingly
- unassumingness
- unatoned
- unattached
- unattainable
- unattainableness
- unattainably
- unattempted
- unattended
- unattested
- unattractive
- unattractively
- unattractiveness
- unattributable
- unattributably
- unattributed
- unaudited
- un-Australian
- unauthentic
- unauthentically
- unauthenticated
- unauthorised
- unauthorized
- unavailability
- unavailable