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Glite Dictionary
Heterostraci

Heterostraci

9.9
A group of armored jawless fish that lived in ancient seas and are now extinct
  • noun
  • /ˌhɛtəˈrɒstrəˌsaɪ/
  • Specialized
translation icon : Heterostraci
  • Scientists have discovered well-preserved fossils of Heterostraci in ancient sedimentary rocks.

Examples

  • The classification of Heterostraci remains a subject of debate among paleontologists.

  • Heterostraci are important for studying the early evolution of vertebrate armor.

  • The Heterostraci were fascinating creatures of the Paleozoic era.

  • Scientists study Heterostraci fossils to understand ancient marine ecosystems.

  • The fossils of Heterostraci provide insights into the evolution of jawless fishes.

  • Researchers have identified numerous species within Heterostraci from the Paleozoic era.

  • Fossils of Heterostraci have been found in various geological formations worldwide.

Synonyms

suborder Heterostraci
vsHeterostraci
  • Specialized
9.9

Fish with hard plates and no jaws known from fossils that lived a very long time ago

is the same group but without stating its taxonomic rank
Ostracodermi
vsHeterostraci
  • Specialized
9.9

An extinct group of jawless animals with heavy bony shields from long ago

is a specific subgroup rather than the broader category

Compounds

suborder Heterostraci
  • Specialized
9.9

Fish with hard plates and no jaws known from fossils that lived a very long time ago

Surface Forms

Heterostraci singular
Heterostracies plural

Etymology

Heterostraci comes from the Greek parts hetero- 'different' and ostracon 'shell', so the name means 'different shells' and is a good image for these extinct, jawless fishes with various bony plates on their bodies.