Fossilized Fish Skeleton
Gnathostome fish indet. cf. Placodermi • Vertebrate body fossil, compression/impression preservation
Geological Period
Devonian
Estimated Age
360-419 million years
Preservation Type
Carbonaceous compression with mineral replacement
Condition Assessment
Fair to Good, showing partial articulation of the axial skeleton with some weathering and matrix breakage
Taxonomic Classification
Phylum Chordata, Subphylum Vertebrata, Class Gnathostomata
Morphological Description
Elongated vertebral column with clearly visible, symmetrically arranged rib elements or branchial structures radiating outward from a central spine, embedded in a fine-grained matrix.
Rock Matrix
Brownish-red fine sandstone or siltstone with iron oxide staining
Formation & Location
Old Red Sandstone, Great Britain or equivalent Devonian fluvial/lacustrine deposits
Size & Dimensions
Approximately 12-15 cm in length, consistent with small primitive jawed fishes of the period
Value & Rarity
Estimated Market Value
150 - 350 USD
Auction Estimate
100 - 250 USD
Rarity Assessment
Uncommon, particularly well-articulated vertebrate specimens from the Devonian
Scientific Significance
Provides insights into early vertebrate skeletal evolution and aquatic paleoenvironments of the Devonian period
Preparation Recommendations
Mechanical preparation under a microscope using fine pneumatic chisels; stabilization with a dilute PVA or Paraloid B-72 solution
Notable Features
Clearly defined central vertebral axis flanked by delicate parallel rib or fin-ray structures preserved in high relief against the reddish matrix