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Jagorina

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Jagorina
Temporal range: UpperFrasnian
Scientific classificationEdit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Class:Placodermi
Order:Rhenanida
Family:Asterosteidae
Genus:Jagorina
Jaekel, 1921
Species:
J. pandora
Binomial name
Jagorina pandora
Jaekel, 1921

Jagorina pandora is arhenanidplacoderm of UpperFrasnianGermany. As with other rhenanids, it was a flattened,skate-like fish protected in an armor made up of unfused tubercles, and preyed on other, smaller fish by ambushing them from the sea bottom.

AlthoughJ. pandora is known primarily from bone fragments and an intact skull, it is the second most studied rhenanid, afterGemuendina stuertzi. It is fromJagorina that the details of the skull anatomy of rhenanids are known. Although scientists know of the overall anatomy and bodyplan of rhenanids because ofG. stuertzi, very little information has been gleaned from the skulls ofG. stuertzi, as all of the specimens of that species have been greatly flattened during fossilization.

References

[edit]
  • Janvier, Philippe.Early Vertebrates Oxford, New York: Oxford University Press, 1998.ISBN 0-19-854047-7
  • Long, John A.The Rise of Fishes: 500 Million Years of Evolution Baltimore: The Johns Hopkins University Press, 1996.ISBN 0-8018-5438-5

External links

[edit]
Gnathostomata
Placodermi
    • see below↓
Acanthothoraci*
Palaeacanthaspidae*
Weejasperaspididae
Palaeacanthaspis vasta
Petalichthyida
Quasipetalichthyidae
Macropetalichthyidae
Ptyctodontida
Rhenanida
Antiarchi
Arthrodira
Others
"maxillate placoderms"
Jagorina pandora
Jagorina
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