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605304
Adaptation of trilobites
Description
A level Geology (Trilobites) Mind Map on Adaptation of trilobites, created by mbaker25 on 05/03/2014.
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geology
trilobites
geology
trilobites
a level
Mind Map by
mbaker25
, updated more than 1 year ago
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Created by
mbaker25
over 10 years ago
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Resource summary
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
Attachments:
Adaptation of a trilobite
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
Attachments:
Adaptation of a trilobite
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