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Rare 4″ Leopoldia leopoldina Fossil Ammonite – Hauterivian, Cretaceous, Analava Madagascar – Genuine + COA

£60.00

A rare and beautifully preserved Leopoldia leopoldina Fossil Ammonite, measuring approximately 4 inches (10 cm), from the Hauterivian Stage of the Cretaceous Period, collected in Analava, Madagascar. This fossil is a striking example of a rare genus, showcasing elegant shell structure and excellent preservation. The specimen pictured is the exact one you will receive, supplied with a Certificate of Authenticity.

Fossil Type & Species:

  • Type: Ammonite (extinct marine cephalopod)
  • Species: Leopoldia leopoldina
  • Order: Ammonitida
  • Superfamily: Perisphinctoidea (tentative placement)
  • Family: Desmoceratidae (probable attribution)

Geological Context:

  • Period: Cretaceous
  • Epoch/Stage: Lower Cretaceous – Hauterivian (approx. 132.9 to 129.4 million years ago)
  • Biozone: Associated with Hauterivian ammonite faunas commonly used for stratigraphic correlation in Tethyan regions
  • Depositional Environment: Marine shelf deposits, with alternating marls and limestones favourable to ammonite preservation

Locality:

  • Region: Analava, Madagascar
  • Formation: Hauterivian marine deposits (specific stratigraphy not confirmed)

Morphology & Features:

  • Moderately evolute shell with wide umbilicus
  • Fine ribbing along the flanks, occasionally bifurcating
  • Rounded venter with continuous ribbing
  • Symmetrical whorls showing characteristic features of the genus Leopoldia

Scientific Notes:

  • Leopoldia leopoldina was originally described by d’Orbigny in 1841, a pioneer in ammonite taxonomy
  • This species is a biostratigraphically significant ammonite for correlating Hauterivian strata in Madagascar and beyond

Notable Details:

  • Excellent preservation with clear ribbing and shell form
  • 100% natural specimen with no restoration
  • Scale Reference: Each square or cube = 1cm. Please see the photo for accurate fossil dimensions

Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. A Certificate of Authenticity is included with your purchase. The fossil shown is the exact specimen you will receive.

 

This Leopoldia leopoldina ammonite is a rare and scientifically important specimen, making it a superb addition to any fossil collection or natural history display.

(Actual as seen)

Only 1 left in stock

SKU: UF4285 Category:

Description

A rare and beautifully preserved Leopoldia leopoldina Fossil Ammonite, measuring approximately 4 inches (10 cm), from the Hauterivian Stage of the Cretaceous Period, collected in Analava, Madagascar. This fossil is a striking example of a rare genus, showcasing elegant shell structure and excellent preservation. The specimen pictured is the exact one you will receive, supplied with a Certificate of Authenticity.

Fossil Type & Species:

  • Type: Ammonite (extinct marine cephalopod)
  • Species: Leopoldia leopoldina
  • Order: Ammonitida
  • Superfamily: Perisphinctoidea (tentative placement)
  • Family: Desmoceratidae (probable attribution)

Geological Context:

  • Period: Cretaceous
  • Epoch/Stage: Lower Cretaceous – Hauterivian (approx. 132.9 to 129.4 million years ago)
  • Biozone: Associated with Hauterivian ammonite faunas commonly used for stratigraphic correlation in Tethyan regions
  • Depositional Environment: Marine shelf deposits, with alternating marls and limestones favourable to ammonite preservation

Locality:

  • Region: Analava, Madagascar
  • Formation: Hauterivian marine deposits (specific stratigraphy not confirmed)

Morphology & Features:

  • Moderately evolute shell with wide umbilicus
  • Fine ribbing along the flanks, occasionally bifurcating
  • Rounded venter with continuous ribbing
  • Symmetrical whorls showing characteristic features of the genus Leopoldia

Scientific Notes:

  • Leopoldia leopoldina was originally described by d’Orbigny in 1841, a pioneer in ammonite taxonomy
  • This species is a biostratigraphically significant ammonite for correlating Hauterivian strata in Madagascar and beyond

Notable Details:

  • Excellent preservation with clear ribbing and shell form
  • 100% natural specimen with no restoration
  • Scale Reference: Each square or cube = 1cm. Please see the photo for accurate fossil dimensions

Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. A Certificate of Authenticity is included with your purchase. The fossil shown is the exact specimen you will receive.

 

This Leopoldia leopoldina ammonite is a rare and scientifically important specimen, making it a superb addition to any fossil collection or natural history display.

Additional information

Era

Cretaceous

Origin

Madagascar

Cretaceous Information

The Cretaceous Period (145–66 million years ago) was the final era of the Mesozoic, marked by the dominance of dinosaurs and the rise of flowering plants. It had a warm, greenhouse climate, with high sea levels that created vast shallow inland seas. Marine life flourished, including mosasaurs, ammonites, and rudist reefs, while the land was ruled by iconic dinosaurs like Tyrannosaurus rex, Triceratops, and Spinosaurus. Mammals and birds diversified, and insects thrived. The period ended with the mass extinction event, likely caused by an asteroid impact, wiping out the dinosaurs and paving the way for the rise of mammals in the Cenozoic.

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