Definition

Proper noun * Ichthyosauridae: A family of marine reptiles within the order Ichthyosauria. These were later ichthyosaurs that lived during the Jurassic and Cretaceous periods and were widely distributed across the globe.

Usage Notes

• Ichthyosauridae is a scientific, taxonomic term used in paleontology and zoology. It refers to a specific family classification, not to an individual animal.
• It is always capitalized as it is a proper noun denoting a formal family name.
• The term is typically used in academic, scientific, or educational contexts when discussing the classification, evolution, or characteristics of this group.

Examples

• Fossils of the Ichthyosauridae show adaptations for fast swimming.
• The research paper compares the skeletal structures of Ichthyosauridae with those of earlier ichthyosaur families.
• Several genera, such as , are classified within the family Ichthyosauridae.

Advanced Usage

• In phylogenetic studies, Ichthyosauridae is defined as a clade sharing a more recent common ancestor with than with other ichthyosaur families like Stenopterygiidae.

Variants and Related Words

• ichthyosaur (noun): A member of the order Ichthyosauria; the common name for these dolphin-like marine reptiles.
• ichthyosaurian (adjective): Of or relating to ichthyosaurs.
• Ichthyosaurus (proper noun): The type genus of the family Ichthyosauridae.

Synonyms

• There are no direct common-language synonyms for this taxonomic name. In informal scientific discussion, one might refer to "members of the Ichthyosauridae family" or "ichthyosaurs of the Ichthyosauridae clade."

Different Meanings

• This term has only one specific meaning in scientific classification. It should not be confused with the broader order Ichthyosauria, which encompasses multiple families including Ichthyosauridae.

Noun

1. later ichthyosaurs of the Jurassic and Cretaceous; widely distributed in both hemispheres