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Large Fossil Gastropod Galeodea sp Oligocene Blakely Formation, Washington Twin Rivers
Large Fossil Gastropod Galeodea sp Oligocene Blakely Formation, Washington Twin Rivers - Image 2

Large Fossil Gastropod Galeodea sp Oligocene Blakely Formation, Washington Twin Rivers

Original price was: £24.00.Current price is: £19.20.

Large Fossil Gastropod (Galeodea sp) – Blakely Formation, Oligocene Epoch, Twin Rivers, Washington, USA

This impressive and well-preserved specimen is a fossil of Galeodea sp., a genus of large marine gastropods. It was collected from the Blakely Formation near Twin Rivers, Washington, and dates to the Oligocene Epoch—approximately 30 to 25 million years ago. Fossils like this represent ancient sea life that inhabited the coastal marine environments of the Pacific Northwest during the Paleogene.

Fossil Type & Classification:

  • Type: Invertebrate Fossil (Marine Gastropod Shell)
  • Genus: Galeodea sp.
  • Phylum: Mollusca
  • Class: Gastropoda
  • Order: Neogastropoda
  • Superfamily: Tonnoidea
  • Family: Cassidae (Helmet and Bonnet snails)
  • Identified by: Commonly referenced in regional molluscan faunal lists from the Blakely Formation

Geological & Stratigraphic Details:

  • Location: Twin Rivers, Washington, USA
  • Formation: Blakely Formation
  • Geological Stage: Oligocene, Paleogene Period
  • Age Range: ~30–25 million years ago
  • Depositional Environment: Shallow marine coastal shelf and embayment with sandy to muddy sediments supporting diverse molluscan fauna

Morphology & Features:

  • Thick, spirally coiled shell with expanded body whorl and well-defined spire
  • Surface ornamentation may include spiral ridges and growth lines
  • Aperture large and rounded, consistent with Cassid gastropods
  • Preserved in natural matrix or as isolated shell fossil, sometimes with internal infilling
  • Large size and robustness make it a visually striking display specimen

Notable: Members of the genus Galeodea are predatory sea snails and part of the Cassidae family, known for their thick shells and often elaborate surface sculpture. Fossils from the Blakely Formation provide critical insights into Oligocene marine ecosystems along the ancient North American West Coast. Specimens of Galeodea are valued by collectors for their rarity and substantial size.

Specimen Details:

  • Origin: Twin Rivers, Washington, USA
  • Species: Galeodea sp.
  • Fossil Type: Marine Gastropod Shell
  • Geological Epoch: Oligocene
  • Formation: Blakely Formation
  • Size Reference: Scale cube = 1cm (refer to photo for exact sizing)
  • Note: The exact specimen shown in the listing photo is the one you will receive

Authenticity & Quality: This is a 100% genuine fossil, naturally preserved and professionally curated. Comes with a Certificate of Authenticity. No enhancements or reconstructions.

Why Choose This Fossil? Ideal for:

  • Marine mollusk fossil collectors
  • Educational use in palaeontology and invertebrate studies
  • Museum-quality display pieces
  • Natural history collectors seeking large gastropod specimens

Shipping & Packaging: We ship worldwide using eco-conscious packaging and tracked delivery. Each fossil is securely wrapped and boxed for safe arrival.

Add a bold and authentic example of Cenozoic marine life to your collection with this large Galeodea gastropod fossil from Washington’s Oligocene Blakely Formation.

 

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

(Actual as seen)

Only 1 left in stock

SKU: UF3245 Category:

Description

Fossil Gastropod Identification

This listing presents a large fossil gastropod identified as Galeodea sp. The specimen is associated with the Blakely Formation and the Oligocene geological interval. Its listed locality is Twin Rivers, Washington, making it an appealing addition for collectors interested in Pacific Northwest fossils, marine invertebrates, and the geological history of Washington State.

Galeodea is a gastropod form, and gastropods are mollusks recognised by their typically coiled shell structure. Fossil gastropods are valued for their distinctive spirals, whorls, apertures, and surface features, which can provide visual insight into the form and diversity of ancient marine life. The “sp.” designation indicates that the specimen is identified within the genus Galeodea without assigning a more specific species name.

Geological Context

The specimen is identified with the Blakely Formation and dates to the Oligocene. The Oligocene was a period of significant change in marine and terrestrial ecosystems, and fossil-bearing formations from this interval are important to paleontology and regional geological study. The Blakely Formation association provides useful geological context for displaying and researching this fossil, while the Twin Rivers, Washington locality connects it with the fossil record of the Pacific Northwest.

The formation and age information make this piece suitable for collectors who organise specimens by geological unit, geological period, or locality. It can also serve as an educational example when discussing fossil gastropods, mollusks, stratigraphy, and the preservation of marine invertebrates in sedimentary rock formations.

Collector Display and Study

With its large format and identifiable gastropod form, this fossil is suited to a natural history display, fossil cabinet, classroom collection, or geology-themed interior. It offers an accessible way to introduce the relationship between fossil identification, locality information, and geological age. The Galeodea sp. identification gives the specimen a clear taxonomic focus while retaining the appropriate level of classification provided for this example.

Please use the photographs to examine the actual form, surface, and presentation of the specimen. Full sizing is shown in the photographs. The photograph shows the actual specimen you will receive.

Authenticity

This Fossil is a genuine specimen and Includes a Certificate of Authenticity lifetime guarantee generic card.

The certificate wording is included with the specimen as stated above. This fossil is suitable for collectors seeking an Oligocene gastropod, a Blakely Formation fossil, a Twin Rivers Washington fossil, or a distinctive geological display piece centred on Galeodea sp.

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