Fossil Bivalve Shell Fragment (Inoceramid or Pecten sp.)
Indeterminate Bivalve (cf. Inoceramus sp. or cf. Pecten / Chlamys sp.) • Body fossil (Calcareous invertebrate shell fragment)
Geological Period
Cretaceous to Neogene (Miocene/Pliocene)
Estimated Age
15 - 100 million years
Preservation Type
Recrystallization and mineral replacement within a calcareous matrix, showing fine external mold detail.
Condition Assessment
Fair - Fragmentary specimen lacking complete hinge and margins, but showing well-preserved surface ornamentation.
Taxonomic Classification
Phylum: Mollusca, Class: Bivalvia, Subclass: Pteriomorphia
Morphological Description
Small, flat to slightly convex shell fragment showing clear, fine concentric growth lines and subtle radial ribbing. Surface shows characteristic yellow-tan color with reddish iron oxide weathering.
Rock Matrix
Calcareous sandstone / marly limestone typical of Mediterranean coastal formations.
Formation & Location
Betic Cordillera / Prebetic Basin, Southeast Spain (e.g., Alicante, Murcia, or Granada region).
Size & Dimensions
Approximately 2.5 cm to 3.0 cm across, small fragmented piece.
Value & Rarity
Estimated Market Value
$5 - $15 USD
Auction Estimate
$5 - $10 USD
Rarity Assessment
Common (fossil bivalves and shell fragments are abundant in Southeastern Spain's marine strata).
Scientific Significance
Low scientific significance as an incomplete fragment, but provides localized evidence of ancient shallow marine depositional environments in Southern Spain.
Preparation Recommendations
No chemical or mechanical preparation needed. Clean gently with a soft dry brush and store in a dry environment.
Notable Features
Distinctive arching growth ring pattern visible across the surface, with slight iron stain mineralization near the basal margin.
Notes
South east spain