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  • Vitta picta (Férussac, 1823)


    Images:

    FranzBernhard

    Taxonomy

    Snail

    Kingdom: Animalia
    Phylum: Mollusca
    Class: Gastropoda
    Order: Neritopsina
    Family: Neritidae
    Genus: Vitta
    Species: V. picta
    Author Citation (Férussac, 1823)

    Geological Time Scale

    Eon: Phanerozoic
    Era: Cenozoic
    Period: Neogene
    Epoch: Miocene
    Age: Langhian

    Stratigraphy

    unknown formation
    Florianer Schichten

    Provenance

    Collector: Franz Bernhard
    Date Collected: 05/22/2017
    Acquired by: Field Collection

    Dimensions

    Height: 6mm

    Location

    Höllerkogel Hill
    St. Josef
    Styria
    Austria

    Comments

    Second photo: About 50 individuals of the snail Vitta picta in different states of weathering, but most of them are still glossy and show their color patterns. The gloss is natural, no coating or something else applied, only washed. The color pattern is strongly variable between individuals. Note that also the outline is quite variable, which is typical for this species. Field of view is 40 mm, largest gastropod is about 6 mm high, so this snails are really small. This is a "multi-genus-species" and was/is assigned also to the following genera: Theodoxus, Agapilia, Clithon, Nerita, Neritina. According to Fossilworks, this species was an epifaunal omnivore-grazer and went extinct 12.7 million years ago.

    First photo is perhaps the largest and one of the best preserved gastropods of this lot in two views. Height is about 6 mm. It is not perfectly preserved; some  parts of the outer shell layer, and hence the color pattern, is missing in the right view. Some parts of the shell along the aperture on the right side are also missing. Outline is quite typical, somewhere in the middle between nearly globular and somewhat cylindrical with a constriction in the middle.

    Exact locality is Höllerkogel-21 in my own documentation. This relatively large outcrop contains predominately the mud snail, Granulolabium bicinctum, and V. picta. Unfortunatelly, most of the shells are strongly weathered or even completely dissolved. Höllerkogel-21 is about 5 m stratigraphically higher then Höllerkogel-18 and located just upslope of Höllerkogel-18.

    The sediments in the area belong to the "Florianer Schichten", which are part of the western Styrian basin at the eastern margin of the Alps. The "Florianer Schichten" are about 15 Ma old (Langhian, or "Badenian" in Paratethys stratigraphic terms).

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    User Feedback


    FossilDAWG

    Posted · Report

    Amazing color patterns!  It reminds me of a species I have collected from the Miocene Chipola Formation in Florida, though I do not remember the species off the top of my head.

     

    Don

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    FranzBernhard

    Posted · Report

    9 minutes ago, FossilDAWG said:

    Amazing color patterns!

    Yes, they are nice, indeed! But soooo small...

    Franz Bernhard

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    Fossildude19

    Posted · Report

    Can you add a few more photos, from a single, complete specimen, as shown HERE ?

    As a virtual museum, we like to be able to see all distinguishing details. ;) 

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    FranzBernhard

    Posted · Report

    9 hours ago, FossilDAWG said:

    Here is a photo of the Florida species I was thinking of.

    Very nice! Thanks for the photo and the link! Could they be at least belong to the same genus??

    9 hours ago, Max-fossils said:

    Gorgeous!!! :wub: 

    Thanks! I already know you like them ;).

    9 hours ago, Fossildude19 said:

    Can you add a few more photos, from a single, complete specimen

    I have sent you a pm.

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    Plax

    Posted · Report

    I had no previous knowledge of these gastropods existing! Thanks for a very interesting post.

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    FranzBernhard

    Posted · Report

    1 hour ago, Plax said:

    I had no previous knowledge of these gastropods existing! Thanks for a very interesting post.

    You are welcome!

    8 minutes ago, Innocentx said:

    Wow! Those are exquisitely decorated!

    Yes, they are! ...and the smallest gastro species is the prettiest :).

    Franz Bernhard

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    Still_human

    Posted · Report

    These aren't fossils, are they? They're exactly like modern nerite or nassarius snails. Ive had lots in my tanks over the years.

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    DPS Ammonite

    Posted · Report

    4 hours ago, Still_human said:

    These aren't fossils, are they? They're exactly like modern nerite or nassarius snails. Ive had lots in my tanks over the years.

    These are fossils because they are 14 to 16 million years old even if they look like living forms. A fossil is usually defined as any trace of the body of an organism or trace made by the organism that is at least 10,000 years old. The preservation can range from nearly unchanged original condition to completely peeudomorphed by another type of mineral or rock.

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    FranzBernhard

    Posted · Report

    6 hours ago, Still_human said:

    These aren't fossils, are they? They're exactly like modern nerite or nassarius snails. Ive had lots in my tanks over the years.

    Yes, these are fossils, as DPS already pointed out, about 15 million years old (we don´t have a coast in Styria (yet);)). According to www.fossilworks.org, this species went extinct 12.7 million years ago (similar info on www.marinespecies.org - extinct). And yes, they belong to the family neritidae. But maybe, these fossil shells belong to a still extant Vitta species?? I don´t know.

    Franz Bernhard

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