Laugiidae

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Laugiidae
Temporal range: Early Triassic to Late Jurassic
Coccoderma bavaricum
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Sarcopterygii
Class: Actinistia
Order: Coelacanthiformes
Family: Laugiidae
Stensiö, 1932
Genera

Laugiidae is an

periods.[1] Their fossils have been found in Canada, Germany and Greenland.[2]

They are notable for the extreme temporal disjunction seen between genera; two genera, Laugia and Belemnocerca, are known from the

latimerioid coelacanth lineage; almost all other non-latimerioid coelacanths were extinct by the Carnian stage of the Late Triassic, leaving only the latimerioids (Latimeriidae and Mawsoniidae) as the dominant coelacanth groups. It has been estimated that the laugiids diverged from the latimerioids & allied taxa (such as the Whiteiidae) during the Early Permian.[3]

Included genera

A potential indeterminate genus is known from the Late Triassic of China.[4][5] The Carboniferous genus Synaptotylus was previously included in this family, but is no longer thought to be a member.[6]

Some studies indicate that the genus Piveteauia, known from the Early Triassic of Madagascar and previously considered a member of the Whiteiidae, may actually be a laugiid.[3]

References

  1. ^ "PBDB Taxon". paleobiodb.org. Retrieved 2024-05-22.
  2. ^ .
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  4. ISSN 1006-7493.{{cite journal}}: CS1 maint: numeric names: authors list (link
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  6. ^ Cloutier, Richard (1996). "Morphology, characters, and the interrelationships of basal sarcopterygians". Interrelationships of Fishes.

Further reading