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  • Abisaadia hakelensis (DAVIS, 1887)


    Images:

    oilshale

    Taxonomy

    Eel

    Kingdom: Animalia
    Phylum: Chordata Haeckel 1874
    Class: Actinopteri Cope 1871
    Order: Anguilliformes Greenwood et al. 1966
    Family: Urenchelyidae Hay 1903
    Genus: Abisaadia
    Species: Abisaadia hakelensis
    Author Citation (DAVIS, 1887)

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Cretaceous
    Sub Period: None
    Epoch: Late
    International Age: Cenomanian

    Stratigraphy

    Sannine Formation

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Length: 8 cm

    Location

    Hgula
    Byblos (Jbeil)
    Mount Lebanon
    Lebanon

    Comments

    Taxonomy from GBIF.org.

    Alternative combination: Urenchelys hakelensis (Davis, 1887)
    Diagnosis translated by oilshale from French (Belouze et al. 2003 p. 367): “Very small anguillimorph fish with about 100 vertebrae clearly taller than long; length ratio between neurocranial roof and total length about 10; head high posteriorly and tapering anteriorly; premaxillae not fused to mesethmovomer; frontals not fused to sensory commissure. anteriorly; premaxillae not fused to the mesethmovomer; frontals not fused and without sensory commissure frontal; parietals very developed; high suspensorium ; ectopterygoid absent; very robust mandible with dental and articulo-angulo-articular joint welded at least laterally and without marked coronoid process; subopercle with bent anterodorsal branch; robust hyoid arch supporting at least 15 branchiosteal at least 15 very long gill rays; first caudal vertebrae without neural spines; undulated neural and hemipeles wavy; pectoral girdle with long, thin cleithra and high pectoral fins; robust caudal fin not continuous with otherwise poorly ossified dorsal and anal fins; LDFF = enPU5/7 and LAFF = ehPU4/8”
    Line drawing from Belouze et al. 2003, p. 368:

    image.png.8c043fc3a201b495e21c38e6fb9c2bf8.png

    Identified by Mr. AbiSaad, owner of the Hgula deposit.
    References:
    Davis, J.W. (1887). On the Fossil Fishes of the Chalk of Mount Lebanon in Syria. Scientific Transactions of the Royal Dublin Society 48 (2), 624–626.
    Belouze, A., Gayet, M. and Atallah, C. (2003) Les premiers Anguilliformes : II. Paraphylie du genre Urenchelys WOODWARD, 1900 et relations phylogénétiques. Geobios, Volume 36, Issue 4, Pages 351-378.




    User Feedback


    Mainefossils

    Posted

    That is an absolutely beautiful fish! 

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    2 hours ago, Mainefossils said:

    That is an absolutely beautiful fish! 

    The fish thanks you for the compliment :D

    What I find special about the eels from the Cretaceous of Lebanon is that there is still a separate tail fin. All younger eels that I know only have a continuous fin seam without a separate tail fin.

    Thomas

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