TaxonHub

Placenta Tooth Cartilaginous Fish

Helodus placenta

An extinct holocephalan fish species from the Carboniferous period, characterized by its distinctive dental and skeletal morphology within the Cochliodontidae family

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Ecology & Habitat

Habitat

Marine environments of North America during the late Paleozoic era, likely inhabiting shallow continental shelf and coastal marine ecosystems

Ecological Role

Played a significant role in marine food webs as a predatory cartilaginous fish, contributing to ecosystem dynamics and evolutionary biodiversity during the Carboniferous period

Morphology

  • SKIN COAT Smooth cartilaginous dermal covering without typical fish scales
  • LIMBS WINGS Paired pectoral and pelvic fins typical of holocephalan anatomical design
  • HEAD SENSORY Specialized dental plates and robust cranial structure adapted for crushing marine invertebrate prey
  • BODY STRUCTURE Chimaera-like body plan with cartilaginous skeleton, approximately 0.5-1.0 m in total length
Data Source: TaxonHub Database
Image Credit: Wikimedia Commons
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Related Species in Cochliodontidae