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Manuel Quiring

This exceptional Douvilliceras ammonite from the Cretaceous period of Madagascar is a striking specimen, showcasing the unique and rare feature of spines on its juvenile shell. 

The spines, which appear in the early growth stages of the ammonite, add a fascinating dimension to the fossil, highlighting the evolutionary adaptations of this ancient creature.

Douvilliceras, a genus of ammonite known for its spiral-shaped, intricately patterned shell, is an extraordinary find in the fossil world. 

The juvenile stage of this species is particularly captivating due to the presence of the sharp spines, which would have been a defensive mechanism to deter predators. As the ammonite grew, these spines would have gradually been replaced with smoother, more mature shell features.

A perfect addition to any collection, this Douvilliceras ammonite embodies both the artistic beauty of nature and the scientific intrigue of ancient life, making it a captivating display piece and an important specimen in understanding the evolutionary story of ammonites.

Ammonite is 5,3 cm.

Cretaceous, Lower (145 - 100.5 million years) - Madagascar

Spiny Ammonite - Fossilised shell - Douvilleiceras

Fossils

Reserve price

No reserve price

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Closing date

Saturday

16 January

Tuesday

Sunday

17 January

Wednesday

Monday

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Budget

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Location

The Netherlands

Italy

Spain

France

Germany

Taiwan

Lithuania

Hong Kong

United States

Poland

Belgium

Sweden

Türkiye

Austria

Portugal

Luxembourg

Romania

Malta

Singapore

Czech Republic

United Kingdom

Dimensions

Height

Width

Depth

Object

Fossil tooth

Fossilised animal

Amber

Fossil teeth

Fossil skeleton

Fossil matrix

Raw mineral

Fossil plate matrix

Fossilised shell

Fossil skull

Fossil fragment

Fossil cabochon

Fossilised plant

Fossil carapace

Earrings

Fossil bone

Bracelet

Fossilised jaw

Necklace

Fossil molar

Carved mineral

Ring

Fossil mortality plate

Taxidermy replica mount

Fossilised egg

Country of origin

Morocco

Madagascar

Indonesia

North America

Asia

China

Netherlands

Lebanon

Myanmar

Brazil

Canada

India

Algeria

Turkey

Baltic states

Africa

Dominican Republic

Russia

South Africa

Material

Silver

Gold-plated

Resin

Yellow gold

Gender

Women

Unisex

Condition

Natural

Restored

Enhanced

As new - unused

Good condition

Composed

Manipulated

Reassembled

Reconstructed

Excellent condition - barely used with minimal signs of wear

Good condition - used with small signs of aging & blemishes

Cast

Excellent condition

Fair condition

Period

Cretaceous, Upper (100.5 - 66 million years)

Cretaceous (145 - 66 million years)

Neogene, Miocene (23.03 - 5.33 million years)

Paleogene, Eocene (56 - 33.9 million years)

Cretaceous, Lower (145 - 100.5 million years)

Devonian (419.2 - 358.9 million years)

Neogene (23.03 - 2.58 million years)

Quaternary, Pleistocene (2.58 - 0.0117 million years)

Triassic (251.9 - 201.3 million years)

Jurassic, Upper (163.5 - 145 million years)

Jurassic (201.3 - 145 million years)

Carboniferous, Pennsylvanian (323.2 - 298.9 million years)

Devonian, Middle (393.3 - 382.7 million years)

Jurassic, Lower (201.3 - 174.1 million years)

Quaternary (2.58 - 0 million years)

Ordovician (485.4 - 443.8 million years)

Triassic, Middle (247.2 - 237 million years)

Paleogene (66 - 23.03 million years)

Cambrian (541 - 485.4 million years)

Devonian, Lower (419.2 - 393.3 million years)

Carboniferous (358.9 - 298.9 million years)

Permian (298.9 - 251.9 million years)

1970-1980

Jurassic, Middle (174.1 - 163.5 million years)

Neogene, Pliocene (5.33 - 2.58 million years)

Stone

Coral

Blood Coral

Pearl

Natural Pearl

Onyx

Chalcedony

Rhodolite

Freshwater cultured pearl

Turquoise

Jade

Zircon

Certification

No laboratory report

Non-CITES species

Fineness

18 kt.

Signature

Not signed

Baroque

Round

Faceted cut

Cabochon cut

Oval

Triangle

Exact colour

White

Mineral

Petrified wood

Amethyst

Aventurine

Labradorite

Mineral form

Freeform

Geode

Sphere

After 2000

1900-2000

Before 1400

1400-1900

Size on item

Adjustable

Large (18 - 18.5 cm)

55 (EU) / 15 (IT) / 7 ¼ (US)

58 (EU) / 18 (IT) / 8 ¼ (US)

Fossils

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Spiny Ammonite - Fossilised shell - Douvilleiceras

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