Fossilized Bone Fragment
Indeterminate Large Mammal (cf. Cetacea or Proboscidea based on cortical thickness) • Body fossil (Vertebrate bone element fragment)
Geological Period
Likely Neogene to Quaternary (Miocene through Pleistocene)
Estimated Age
Approx. 0.01 to 23 million years
Preservation Type
Permineralization with surface mineralization and significant fluvial abrasion/water-wear.
Condition Assessment
Poor to Fair; highly fragmentary and significantly weathered by environmental exposure and transport.
Taxonomic Classification
Phylum: Chordata, Class: Mammalia (Indeterminate Large Mammal)
Morphological Description
Fragmentary bone element exhibiting a dense cortical outer layer and a porous, weathered trabecular (cancellous) interior. The specimen shows significant water-rolling, resulting in rounded edges and a smooth surface patina. Several small pits represent vascular foramen.
Rock Matrix
None attached; the specimen is an isolated find likely recovered from fluvial gravels or beach deposits.
Formation & Location
Commonly found in the Peace River Formation (Florida, USA) or similar coastal/riverine lag deposits globally.
Size & Dimensions
Approximately 4-6 cm in length; consistent with partial limb or rib fragments of medium-to-large megafauna.
Value & Rarity
Estimated Market Value
$5 - $15 USD
Auction Estimate
$10 - $30 USD (as part of a bulk study lot)
Rarity Assessment
Common; isolated water-worn bone fragments are ubiquitous in many fossiliferous river and coastal sites.
Scientific Significance
Low; while confirming the presence of megafauna in a specific locality, the lack of diagnostic articular surfaces or anatomical markers limits its utility for specific evolutionary research.
Preparation Recommendations
Requires stabilization with a reversible consolidant such as Paraloid B-72 if crumbling; otherwise, simple cleaning with soft brushes and dry storage.
Notable Features
Features distinct 'honeycomb' texture in the cross-section representing fossilized cancellous bone tissue and a heavy mineral patina indicative of long-term submersion.