Trinucleid trilobites

Question 1

What is the classification of Trinucleid arthropods?

Answer 1

Order- Asaphida
Sub-order - Trinucleina

Question 2

What are the characteristics of suborder trinucleina?

Answer 2

Blind, no dorsal facial sutures, glabella expands forwards.
Six thoracic segments.
Triangular pygidium.
Cephalon may have pitted fringe or long anterior spine

Question 3

Based on the classification of trinucleid arthropods what was our hypothesis mode of life?

Answer 3

Due to being blind we thought this might mean it was a burrower (like moles)

Question 4

Based on the facial suture of trinucleid arthropods what might its mode of life indicate?

Answer 4

Head is relatively streamline and not shovel like which does not benefit burrowing

Question 5

What is the purpose of a pitted fringe?

Answer 5

potentially a sensory organ
NOt a hole all the way through so not filter

Question 6

BAsed on its size what would the power and limb size of trinucleid trilobites be?

Answer 6

Very small axial lobe with little room for large limbs so it wouldnt have been a powerful animal

Question 7

What was the function of the genal spines of trinucleid trilobites?

Answer 7

Act as support of a nest like position in sediment

Question 8

What is the mode of life of trinucleid?

Answer 8

Benthic- living on the sea floor and making small divots to rest in

Question 9

What do burrowing trilobites look like?

Answer 9

Smooth shovel like head with large axial lobe to provide the power to move sediment