Enniskillenus radiatus
Enniskillenus radiatus
View age-specific evidence and explanation
| Age | Recorded Occurrences | Localities | Rarity |
|---|---|---|---|
| Ypresian | 3 | 3 | Not yet established |
These counts describe published LBPS Occurrence records with directly assigned, unambiguous geological-unit mappings—not specimen abundance. Records at restricted Localities and ambiguous or unsupported ages are excluded. Species-level age labels are not used as proof of an age-specific Occurrence.
Specimen-based rarity requires comparable, correctly identified physical fossils, geological provenance and publication permissions. It does not estimate your chance of finding a fossil or collecting access.
Quick Identification
Look for: a long, narrow skull with an ossified sclerotic ring, strongly radiating fibrous ornament on the frontals, elongate upper and lower jaws and a keel-like fused lower-jaw symphysis that tapers forward.
Summary
Enniskillenus radiatus was a long-snouted predatory teleost belonging to the diverse assemblage of rostrum-bearing fishes in the London Clay. It combined elongate jaws with an ossified eye ring and ornate cranial roofing bones. The narrow jaws and fine dentition are more consistent with seizing small mobile prey than with crushing hard food.
Its ecology is inferred from this feeding apparatus and its billfish-like cranial proportions. The elongate head would have reduced frontal area and may have suited active swimming in open water, while the precise function of the rostral region remains uncertain. Most evidence comes from three-dimensional skull material rather than complete bodies.
Diagnostic Features
- Frontal bones carry strong radiating fibrous ornament.
- A distinct opening or fenestra occurs in the frontoparietal region of the skull roof.
- Upper and lower jaws are markedly elongate and narrow.
- Fused mandibular symphysis forms a ventral keel that tapers along the rostral part of the jaw.
- Jaw margins bear very small, fine abrasive teeth rather than large fangs.
Fossil Details
Recorded Fossil Sites
London Clay Formation
References
- Casier, E. (1966). Faune ichthyologique du London Clay. 496 pp.. Trustees of the British Museum (Natural History), London View reference
- Friedman, M.; Beckett, H. T.; Close, R. A.; Johanson, Z. (2016). The English Chalk and London Clay: two remarkable British bony fish Lagerstätten. Geological Society, London, Special Publications, 430(1), 165–200. Geological Society of London, London View reference
- Monsch, K. A. (2005). Revision of the scombroid fishes from the Cenozoic of England. Transactions of the Royal Society of Edinburgh: Earth Sciences, 95(3–4), 445–489 View reference