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  • Lebanon Slipper Lobster


    Images:

    darktheumbreon

    Taxonomy

    Slipper Lobster

    Kingdom: Animalia
    Phylum: Arthropoda
    Class: Crustacea
    Order: Malacostraca
    Family: Scyllaridae
    Genus: Paracancrinos?
    Species: unknown
    Author Citation Haug et al.

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Cretaceous
    Epoch: Late
    Age: Cenomanian / Turonian

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Length: 6.6cm
    Width: 5.7cm
    Height: 0.9cm

    Location

    Haqil
    Lebanon

    Comments

    A fossil of a slipper lobster covered in dendrites associated with a shrimp and a fish (Gaudryella gaudryi). One can see that it is a slipper lobster due to the flattened antennas (antennules) found above the carapace. For this reason, slipper lobster are actually more related to the spiny lobsters and furry lobsters, with all three being in the infraorder Achelata. This specimen looks most similar to the recently described species of slipper lobster called Paracancrinos libanensis (Haug) due to its rectangular shape, however I am not sure if it should be labeled as such due to it being much less stocky than P. libanensis and it appearing narrower and longer. The carapace also seems longer in proportion to the abdomen than as described to be in P. libanensis. The antennules (the flattened claw like element) are petaloid in this specimen just like in P. libanensis, however this specimen has much rounder and shorter antennules than P. libanensis. This specimen does not appear to be the seemingly only other described slipper lobsters that I know of in Cretaceous Lebanon, Charbelicaris maronites (Haug), Palibacus praecursor (Dames 1886) and Acanthophoenicides peterpani (Denis) as those three are much more stockier and rounder in appearance, those three species seem to seemingly be more superficially be similiar to modern day slipper lobster. This specimen may just be a variation of P. libanensis, I'd be glad to hear your opinion on the matter.

     

    Citations

     

    Dames, W. (1886): Über einige Crustaceen aus den Kreideablagerungen des Libanon. - Z. dt. geol. Ges. 38: 551-575, Taf. 13-15; Berlin.

     

    Denis Audo, Sylvain Charbonnier; New Nisto of Slipper Lobster (Decapoda: Scyllaridae) from the Hadjoula Lagerstätte (Late Cretaceous, Lebanon), Journal of Crustacean Biology, Volume 32, Issue 4, 1 July 2012, Pages 583–590, https://doi.org/10.1163/193724012X634189

     

    Haug, J.T., et al., The evolution of a key character, or how to evolve a slipper lobster, Arthropod Structure & Development (2015), http://dx.doi.org/10.1016/j.asd.2015.08.003

     

     



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