Jump to content
  • Kalops monophrys Poplin & Lund, 2002


    Images:

    oilshale

    Taxonomy

    Palaeonisciformes

    Kingdom: Animalia
    Phylum: Chordata
    Class: Actinopteri Cope 1871
    Order: incertae sedis
    Family: incertae sedis
    Genus: Kalops
    Species: Kalops monophrys
    Author Citation Poplin & Lund, 2002

    Geological Time Scale

    Eon: Phanerozoic
    Era: Paleozoic
    Period: Carboniferous
    Sub Period: Mississippian
    Epoch: Late
    International Age: Serpukhovian

    Stratigraphy

    Big Snowy Group
    Heath Formation

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Length: 17 cm

    Location

    Bear Gulch
    Fergus County
    Montana
    United States

    Comments

     
    Kalops monophrys is known by over 125 specimens from the Bear Gulch Limestone. K. monophrys is distinguished from its smaller sister species, Kalops diophrys, by having more caudal fin rays, a different number of supraorbital bone rows, and the development of its ganoine ridging at a larger size. The cranial osteology of Kalops most closely resembles that of the poorly known Palaeoniscus and "Elonichthys" serratus. The snout structure is closest to that of the Tarrasiiformes.
    Diagnosis from Poplin & Lund 2002, p. 1014: "Total length ranging from 44 to 116 mm; postrostral meeting the frontal in the midline anteriorly to mid-orbit level; ovoid antorbital; one row of supraorbitals; about five infraorbitals and five suborbitals; anterior extremity of the preopercle as high as the posterior plate of the maxillary; about 15 branchiostegal rays; one pair of extrascapulars; supracleithrum higher than opercle; from eight up to 17 predorsal median scutes, continuous between skull and dorsal fin; dorsal fin spanning 14 scale rows; anal fin with fulcra; scaled lobe of the caudal fin at 25 degrees to the body axis."
    Line drawing from Poplin & Lund 2002, p. 1017:
    425359453_Kalopsmonolinedrawingp1017.JPG.9eefdebc18ea156751a86061163a1325.JPG

    Identified by oilshale using Poplin & Lung 2002.

    References:
    Poplin, C., & R. Lund (2002) "Two Carboniferous fine-eyed paleoniscoids (Pisces, Actinopterygii) from Bear Gulch (USA)." Journal of Paleontology 76: 1014-1028.

     




    User Feedback


    Great fish, Thomas - I love your Bear Gulch collection!

    Amazing examples.

    (Actually, I love everything in your collection, truth be told. :P ) 

    Share this comment


    Link to comment
    Share on other sites

    22 hours ago, Fossildude19 said:

    Great fish, Thomas - I love your Bear Gulch collection!

    Amazing examples.

    (Actually, I love everything in your collection, truth be told. :P ) 

    Thanks Tim,

    Bear Gulch is a great place with a lot of strange and interesting animals.

    Thomas

    Share this comment


    Link to comment
    Share on other sites

    I heard not too long ago that bear gulch and surrounding area was bought up by two texas oil dudes and that no one is allowed to dig there anymore? 

     

    RB

    Share this comment


    Link to comment
    Share on other sites

    4 hours ago, RJB said:

    I heard not too long ago that bear gulch and surrounding area was bought up by two texas oil dudes and that no one is allowed to dig there anymore? 

     

    RB

    It is sad, but that's what I've heard too. But I haven't been there for a long, long time.

    Share this comment


    Link to comment
    Share on other sites



    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now

×
×
  • Create New...