New to LiveAuctioneers?

Magnificent 36.5 cm ammonite - Prososphinctes sp.

Description

Title: Magnificent 36.5 cm ammonite - Prososphinctes sp.

Origin: Madagascar

Size: 36.5 cm diameter

Description: Species: Prososphinctes sp.
Age: Jurassic, Oxfordian
Locality: Sakaraha, Madagascar
Measurements: 36.5 cm diameter
Weight: 9.5 kg
An outstanding polished ammonite Prososphinctes with beautiful white shell. Thick decorative specimen with great inner whorls. Small areas may have been filled.
The stand is not included.

Reserve: $1,200.00

Shipping:

Domestic: Flat-rate of $190.00 to anywhere within the contiguous U.S.

International: Foreign shipping rates are determined by destination. International shipping may be subject to VAT.

Combined shipping: Please ask about combined shipping for multiple lots before bidding.

Location: This item ships from France.

Your purchase is protected:
In the rare event that the item did not conform to the lot description in the sale, Chairish Auctions specialists are here to help. Buyers may return the item for a full refund provided you notify Chairish Auctions within 5 days of receiving the item.

Buyer's Premium

20%

Magnificent 36.5 cm ammonite - Prososphinctes sp.

Lot 0043

Estimate $1,500-$2,000

Mar 25, 2026, 6:42 PM EDT

Starting Price

Secure

$600

LiveAuctioneers Purchase Protection

Vetted auction houses

Secure, online bidding

Returns guaranteed for misrepresented listings

Dedicated support when you need it

Fossilized Ammonites, Trilobites, and More!

Mar 18, 2026 12:00 PM EDT

New York, NY, United States

Rare trilobite Belenopyge sp.: Title: Rare trilobite Belenopyge sp.Origin: MoroccoSize: 22 mm long trilobiteDescription: Species: Belenopyge sp. (undescribed species) Age: Devonian Locality: Morocco Measurements: 2.2 cm long

Rare trilobite Belenopyge sp.

Finest small trilobite Dactylocephalus sp.: Title: Finest small trilobite Dactylocephalus sp. Origin: Morocco Size: c. 20 mm long trilobite Description: Species: Dactylocephalus sp. Age: Ordovician Locality: Zagora-Tata area, Morocco Measuremen

Finest small trilobite Dactylocephalus sp.

Wonderful 16.4 cm nacreous Ammonite - Aioloceras besairiei: Title: Wonderful 16.4 cm nacreous Ammonite - Aioloceras besairiei Origin: Madagascar Size: 16.4 cm diameter Description: Species: Aioloceras besairiei Age: Cretaceous, Albian Locality: Mahajanga, Mada

Wonderful 16.4 cm nacreous Ammonite - Aioloceras besairiei

Exquisite trilobite - Barrandeops sp.: Title: Exquisite trilobite - Barrandeops sp. Origin: Morocco Size: 4.9 cm long trilobite Description: Species: Barrandeops sp. Age: Devonian Locality: Morocco Measurements: c. 4.9 cm long (trilobite)

Exquisite trilobite - Barrandeops sp.

Fine trilobite - Barrandeops sp.: Title: Fine trilobite - Barrandeops sp. Origin: Morocco Size: c. 5.4 cm long trilobite Description: Species: Barrandeops sp. Age: Devonian Locality: Morocco Measurements: c. 5.4 cm long (trilobite) -

Fine trilobite - Barrandeops sp.

Uncommon trilobite - Cyphaspis sp.: Title: Uncommon trilobite - Cyphaspis sp. Origin: Morocco Size: 1.8 cm long Description: Species: Cyphaspis sp. Age: Devonian Locality: Morocco Measurements: c. 1.8 cm long (trilobite) - 6.5 x 6 cm (m

Uncommon trilobite - Cyphaspis sp.

Rare Aglaspidid Tremaglaspis sp.: Title: Rare Aglaspidid Tremaglaspis sp. Origin: Morocco Size: 2.9 cm long - c. 13.5 x 11.5 cm (matrix) Description: Species: Tremaglaspis sp. Age: Lower Ordovician, "Formation des argiles de Fezouata"

Rare Aglaspidid Tremaglaspis sp.

30 cm Ammonite on stand - Kranaosphinctes sp.: Title: 30 cm Ammonite on stand - Kranaosphinctes sp. Origin: Madagascar Size: c. 30 cm diameter Description: Species: Kranaosphinctes sp. Age: Jurassic, Oxfordian Locality: Sakaraha, Madagascar Measur

30 cm Ammonite on stand - Kranaosphinctes sp.

Featured

Fine 16.5 cm ammonite Douvilleiceras mammillatum: Title: Fine 16.5 cm ammonite Douvilleiceras mammillatum Origin: Madagascar Size: 16.5 cm diameter Description: Species: Douvilleiceras mammillatum Age: Albian, Cretaceous Locality: Mahajanga, Madagasc

Fine 16.5 cm ammonite Douvilleiceras mammillatum

Featured

Argonauticeras besairiei ammonite with prepared septum: Title: Argonauticeras besairiei ammonite with prepared septum Origin: Madagascar Size: 21 cm diameter Description: Species: Argonauticeras besairiei Age: Cretaceous, Albian Locality: Mahajanga Basin,

Argonauticeras besairiei ammonite with prepared septum

Featured

Beautiful 18 cm ammonite Douvilleiceras mammillatum: Title: Beautiful 18 cm ammonite Douvilleiceras mammillatum Origin: Madagascar Size: c. 18 cm diameter Description: Species: Douvilleiceras mammillatum Age: Albian, Cretaceous Locality: Mahajanga, Mada

Beautiful 18 cm ammonite Douvilleiceras mammillatum

Featured

Outstanding Koneprusia and Phacops combo: Title: Outstanding Koneprusia and Phacops combo Origin: Morocco Size: c. 4.1 cm long (trilobite) - c. 11 x 7.5 cm (matrix) Description: Species: Koneprusia sp. and "Phacops" sp. Age: Devonian Locality

Outstanding Koneprusia and Phacops combo

Featured

Large Nautilid - Cymatoceras sakalavus: Title: Large Nautilid - Cymatoceras sakalavus Origin: Madagascar Size: c. 21 cm diameter Description: Species: Cymatoceras sakalavus Age: Albian, Cretaceous Locality: Mahajanga, Madagascar Measurement

Large Nautilid - Cymatoceras sakalavus

Featured

Beautiful trilobite duo of Gerastos sp.: Title: Beautiful trilobite duo of Gerastos sp. Origin: Morocco Size: c. 19 and 25 mm long trilobites Description: Species: Gerastos sp. Age: Middle Devonian Locality: Morocco Measurements: c. 19 and 2

Beautiful trilobite duo of Gerastos sp.

Polished Ammonite with highlighted suture lines - Aioloceras besairiei: Title: Polished Ammonite with highlighted suture lines - Aioloceras besairiei Origin: Madagascar Size: 13.5 cm diameter Description: Species: Aioloceras besairiei Age: Cretaceous, Albian Locality: Mah

Polished Ammonite with highlighted suture lines - Aioloceras besairiei

Rare trilobite Kettneraspis dickinsoni: Title: Rare trilobite Kettneraspis dickinsoniOrigin: MoroccoSize: c. 3.1 cm long trilobiteDescription: Species: Kettneraspis dickinsoni Age: Devonian Locality: Morocco Measurements: c. 3.1 cm long

Rare trilobite Kettneraspis dickinsoni

Beautiful 6.5 cm dinosaur tooth - Carcharodontosaurus saharicus: Title: Beautiful 6.5 cm dinosaur tooth - Carcharodontosaurus saharicusOrigin: MoroccoSize: 6.5 cm longDescription: Species: Carcharodontosaurus saharicus Age: Cretaceous, Cenomanian Locality: near

Beautiful 6.5 cm dinosaur tooth - Carcharodontosaurus saharicus

Silicified fossils in natural limestone matrix: Title: Silicified fossils in natural limestone matrixOrigin: FranceSize: 5 x 5 x 4 cm (fossils + matrix)Description: Species: diverse molluscan species. Age: Jurassic, Oxfordian Locality: Alsace,

Silicified fossils in natural limestone matrix

38 cm Ammonite Euaspidoceras with superb suture patterns: Title: 38 cm Ammonite Euaspidoceras with superb suture patternsOrigin: MadagascarSize: c. 38 cm diameterDescription: Species: Euaspidoceras sp. Age: Jurassic, Oxfordian Locality: Sakaraha, Madagascar

38 cm Ammonite Euaspidoceras with superb suture patterns

20 cm spiny ammonite Mammites nodosoides: Title: 20 cm spiny ammonite Mammites nodosoidesOrigin: MoroccoSize: 20 cm diameterDescription: Species: Mammites nodosoides Age: Cretaceous, Turonian Locality: Asfla, Morocco Measurements: 20 cm

20 cm spiny ammonite Mammites nodosoides

Related Searches

Amber Fossils Fossil Bags Fossil Specimen Fossil Watch Fossils and Minerals Mineralized Fossil Paleozoic Fossils Pokemon Fossil Pack prehistoric rocks, minerals & fossils Price Results Auctions in New York

TOP