Zusammenfassung der Ressource
Adaptation of trilobites
- Benthonic
- E.g. Calymene
- Little streamling
- Did not swim
- Complex compound eye
- Good depth of vision
- Sensitive to movement
- Crescent shaped
- Forwards, backward and
sideways
- Many pleura
- enrolling for protection
- many gills for respiration
- Bottom dwelling
- Active hunters
- Scavengers
- epifaunal
Anlagen:
- Planktonic
- E.g. Agnostus
- Small and light
- no eyes
- Blind
- Few legs and gills
- Found in shales
- Fed on detritus
- Nektonic
- Small
- some streamlining
- complex
compound eyes
on stalks
- 360 degree vision
- active hunter
- Forwards, sideways,
backwards and
underneath
- E.g. Deiphon
- Numerous pleura, with spines
- increase surface area
- aid buoyancy
- Burrowing
- E.g. Trinucleus
- no eyes
- found 200m deep
- shovel-shaped modified cephalon with pits
- digging tool
- burrows for protection and feeding
- pits housed sensory hairs
- Spread its mass
- Fed on
organic-rich
sediment
- Infaunal
Anlagen: