Fayolia

Fayolia
Temporal range: Late Devonian–Middle Triassic
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Order: †Xenacanthida
Family: †Xenacanthidae
Genus: †Fayolia
Renault & Zeiller, 1884
Type species
†Fayolia dentata
Renault & Zeiller, 1884
Species[1]

Fayolia is a genus of fossil egg capsule, widely thought to have been produced by xenacanths.[2] The egg is elongate and tapers towards both ends, and surrounded by helically twisted collarettes, with one end (the beak) having a tendril.[3]

It is predominantly known from freshwater deposits with 16 species spanning a stratigraphic range from the Late Devonian to the Middle Triassic.[3] A new species, Fayolia sharovi, was described in 2011 from lacustrine deposits of the Middle Triassic Madygen Formation in Kyrgyzstan, Central Asia.[4]

References

  1. ^ "PBDB Taxon".
  2. ^ Jörg W. Schneider; Wolfgang Reichel (1989). "Chondrichthyer-Eikapseln aus dem Rotliegenden (Unterperm) Mitteleuropas — Schlußfolgerungen zur Paläobiologie paläozoischer Süsswasserhaie". Freiberger Forschungshefte. C 436: 58–69.
  3. ^ a b Fischer, Jan; Licht, Martin; Kriwet, Jürgen; Schneider, Jörg W.; Buchwitz, Michael; Bartsch, Peter (3 April 2014). "Egg capsule morphology provides new information about the interrelationships of chondrichthyan fishes". Journal of Systematic Palaeontology. 12 (3): 389–399. Bibcode:2014JSPal..12..389F. doi:10.1080/14772019.2012.762061. ISSN 1477-2019.
  4. ^ Jan Fischer; Sebastian Voigt; Jörg W. Schneider; Michael Buchwitz; Silke Voigt (2011). "A selachian freshwater fauna from the Triassic of Kyrgyzstan and its implication for Mesozoic shark nurseries". Journal of Vertebrate Paleontology. 31 (5): 937–953. Bibcode:2011JVPal..31..937F. doi:10.1080/02724634.2011.601729. S2CID 85753690.

Further reading

  • J. Fischer and I. Kogan. 2008. Elasmobranch egg capsules Palaeoxyris, Fayolia and Vetacapsula as subject of palaeontological research – an annotated bibliography. Freiberger Forschungshefte C528:75-91


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