Introducing a VERY RARE and scientifically significant fossil heteromorph ammonite: Toxoceratoides taylori, from the Aptian Stage of the Early Cretaceous, collected from the renowned Walsh River site in Queensland, Australia. This unique piece is part of the prestigious Alice Purnell Collection, known for its expertly curated and accurately identified fossil specimens.

Toxoceratoides taylori is a heteromorph ammonite species, exhibiting uncoiled or loosely coiled shell morphology, which deviates from the typical planispiral ammonite form. The genus is placed within the family Ancyloceratidae, under the superfamily Ancyloceratoidea, and order Ammonitida. These ammonites are well-known for their distinctive, often loosely helically coiled or hooked shells.

Geological & Scientific Details:

• Scientific Name: Toxoceratoides taylori
• Fossil Type: Heteromorph Ammonite
• Geological Period: Cretaceous
• Geological Stage: Aptian (~125–113 million years ago)
• Location Found: Walsh River, Queensland, Australia
• Order: Ammonitida
• Superfamily: Ancyloceratoidea
• Family: Ancyloceratidae
• Morphological Features: Loosely coiled to helical shell, complex suture patterns, prominent ribs, and occasional tubercles or spines
• Depositional Environment: Marine offshore sedimentary basin – typically deep-water marl and shale indicative of a warm Cretaceous seaway

This species reflects an important evolutionary pathway of ammonites adapting to varying buoyancy and mobility strategies. Heteromorphs such as Toxoceratoides are valuable for biostratigraphy and palaeoecological studies.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

Please Note:

• Scale Rule Squares / Cube = 1cm – full sizing is visible in the photo
• The fossil pictured is the exact specimen you will receive
• From the Alice Purnell Collection – ideal for collectors, academics, and enthusiasts alike

A rare and fascinating ammonite fossil that makes a standout addition to any scientific or natural history collection.