Definition

Noun: 1. A genus of early, primitive theropod dinosaur: Herrerasaurus is a genus of carnivorous dinosaur that lived during the Late Triassic period. It is considered one of the earliest and most basal theropods, displaying a mix of primitive and advanced skeletal features. 2. A member of this genus: The term can refer to any dinosaur belonging to the genus Herrerasaurus.

Usage Examples

• Noun:
  • The fossilized skeleton of a herrerasaur provides crucial evidence about the early evolution of predatory dinosaurs.
  • Paleontologists believe the herrerasaur was a fast, bipedal hunter.
  • This discovery suggests the herrerasaur lived in what is now Argentina approximately 230 million years ago.

Advanced Usage

• The term is often used in scientific and paleontological contexts to discuss early dinosaur evolution and the characteristics of basal theropods.
• It is frequently mentioned in contrast with later, more derived theropods like or to highlight evolutionary changes.

Variants and Related Words

• Herrerasaurus: The full, formal genus name. This is the more precise scientific term.
• Herrerasauridae: The family name that includes and its closest relatives.
• Basal theropod: A descriptive term for early, primitive members of the theropod group, which includes .

Synonyms

• Early theropod
• Primitive dinosaur (in a specific scientific context)

Notes on Different Meanings

The word "herrerasaur" has a single, specific meaning in paleontology. It does not have common idiomatic or figurative uses. It refers exclusively to this particular genus of Triassic dinosaur.

Noun

1. a kind of theropod dinosaur found in Argentina