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RARE Protolenus Trilobite Fossil (Partial) – Middle Cambrian – Valdemiedes Formation – Mureri, Spain – Certified Authentic
RARE Protolenus Trilobite Fossil (Partial) – Middle Cambrian – Valdemiedes Formation – Mureri, Spain – Certified Authentic - Image 2

RARE Protolenus Trilobite Fossil (Partial) – Middle Cambrian – Valdemiedes Formation – Mureri, Spain – Certified Authentic

Original price was: £18.00.Current price is: £16.20.

RARE Protolenus Fossil Trilobite (Partial)

Middle Cambrian – Valdemiedes Formation – Mureri, Spain

This is a rare partial trilobite fossil from the genus Protolenus, originating from the Valdemiedes Formation, a Middle Cambrian marine deposit in the famed Murero trilobite zone of Mureri, Zaragoza Province, Spain. This site is globally renowned for its diverse and well-preserved Cambrian fauna, especially trilobites.

  • All of our Fossils are 100% Genuine Specimens
  • Includes a Certificate of Authenticity
  • You will receive the exact specimen shown in the photo
  • Scale Rule Squares / Cube = 1cm — please refer to photo for full sizing

Geological & Stratigraphic Details

  • Locality: Rambla de Valdemiedes, near Mureri, Zaragoza Province, Spain
  • Formation: Valdemiedes Formation
  • Period: Cambrian
  • Epoch: Middle Cambrian
  • Stage: Wuliuan Stage (previously termed as part of the Languedocian regional stages)
  • Biozone: Often associated with Eccaparadoxides biozone, where Protolenus co-occurs
  • Depositional Environment:
  • Shallow marine shelf
  • Soft muddy substrates with low sedimentation rates
  • Oxygen-deficient bottom conditions conducive to preservation

Fossil Type & Morphology

  • Fossil Type: Arthropod – Trilobite
  • Genus: Protolenus
  • Taxonomic Placement:
  • Order: Redlichiida
  • Superfamily: Fallotaspidoidea
  • Family: Protolenidae

Morphological Features (if visible in the specimen):

  • Elongate cephalon with a well-defined glabella
  • Prominent axial lobe segmentation
  • Narrow thoracic segments, often with downward-curving pleurae
  • One of the earliest-known trilobite genera to show complex glabellar furrows

Scientific & Historical Notes

  • Protolenus is a key genus in Cambrian trilobite taxonomy, representing one of the earliest members of the redlichiid lineage in Europe.
  • The Valdemiedes Formation and Protolenus specimens therein have been used extensively in biostratigraphic correlation and early trilobite evolutionary studies.
  • The genus has been described in numerous palaeontological publications and is important for understanding early arthropod diversification.

What’s Included

  • The exact fossil trilobite specimen shown in the listing
  • Certificate of Authenticity
  • Protective and secure fossil-safe packaging

Perfect For:

  • Advanced fossil collectors
  • Palaeontology educators and researchers
  • Museum collections and displays
  • Scientific study of early trilobites

 

(Actual as seen)

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SKU: UF3959 Category:

Description

RARE Protolenus Fossil Trilobite (Partial)

Middle Cambrian – Valdemiedes Formation – Mureri, Spain

This is a rare partial trilobite fossil from the genus Protolenus, originating from the Valdemiedes Formation, a Middle Cambrian marine deposit in the famed Murero trilobite zone of Mureri, Zaragoza Province, Spain. This site is globally renowned for its diverse and well-preserved Cambrian fauna, especially trilobites.

  • All of our Fossils are 100% Genuine Specimens
  • Includes a Certificate of Authenticity
  • You will receive the exact specimen shown in the photo
  • Scale Rule Squares / Cube = 1cm — please refer to photo for full sizing

Geological & Stratigraphic Details

  • Locality: Rambla de Valdemiedes, near Mureri, Zaragoza Province, Spain
  • Formation: Valdemiedes Formation
  • Period: Cambrian
  • Epoch: Middle Cambrian
  • Stage: Wuliuan Stage (previously termed as part of the Languedocian regional stages)
  • Biozone: Often associated with Eccaparadoxides biozone, where Protolenus co-occurs
  • Depositional Environment:
  • Shallow marine shelf
  • Soft muddy substrates with low sedimentation rates
  • Oxygen-deficient bottom conditions conducive to preservation

Fossil Type & Morphology

  • Fossil Type: Arthropod – Trilobite
  • Genus: Protolenus
  • Taxonomic Placement:
  • Order: Redlichiida
  • Superfamily: Fallotaspidoidea
  • Family: Protolenidae

Morphological Features (if visible in the specimen):

  • Elongate cephalon with a well-defined glabella
  • Prominent axial lobe segmentation
  • Narrow thoracic segments, often with downward-curving pleurae
  • One of the earliest-known trilobite genera to show complex glabellar furrows

Scientific & Historical Notes

  • Protolenus is a key genus in Cambrian trilobite taxonomy, representing one of the earliest members of the redlichiid lineage in Europe.
  • The Valdemiedes Formation and Protolenus specimens therein have been used extensively in biostratigraphic correlation and early trilobite evolutionary studies.
  • The genus has been described in numerous palaeontological publications and is important for understanding early arthropod diversification.

What’s Included

  • The exact fossil trilobite specimen shown in the listing
  • Certificate of Authenticity
  • Protective and secure fossil-safe packaging

Perfect For:

  • Advanced fossil collectors
  • Palaeontology educators and researchers
  • Museum collections and displays
  • Scientific study of early trilobites

 

Additional information

Era

Cambrian
Origin

Spain

Cambrian Information

The Cambrian Period (541–485 million years ago) was the first period of the Paleozoic Era, marking a dramatic explosion of life known as the Cambrian Explosion. During this time, complex multicellular organisms rapidly diversified, giving rise to the first arthropods, mollusks, echinoderms, and chordates—early ancestors of vertebrates. The climate was generally warm, with high sea levels covering much of the continents, creating vast shallow seas where life thrived. Iconic creatures such as Trilobites, Anomalocaris, and Opabinia dominated the oceans, while the first primitive reefs formed. The Cambrian set the stage for the evolution of modern animal groups and the complexity of marine ecosystems.

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