Lab One Geography-Fossil Classification

Front 1

Large grey trunk showing clear growth wings.

Back 1

Fossil Wood

Front 2

Three different shaped specimens each consisting of two joint parts. although they look similar to clams and pipis they are not related.

Back 2

Brachiopods

Front 3

-> Two specimens - a modern and a fossil form.
-> Colonial animal consisting of a series of cups called corallites each of which contained an animal
-> Each corallite is edged by a series of fine plates extending towards the centre of the cup called septa.

Back 3

Corals

Front 4

->The species grows in a precise spiral (Archimedes spiral)
-> It grows by adding a chamber at a time
-> The floor of each chamber is called a septum and each chamber us linked via a tube that passes through each chamber called a siphuncle.

Back 4

Nautilus

Front 5

-> Body composed of small plates of calcite
-> Mouth & Anus
-> Rows of pores. In living specimens organs called tube feet emerge from these pores. These organs are multi purpose being involved in feeding, respiration, movement and reproduction.

Back 5

ECHINODERMATA
- Kina
- Sand-dollar

Front 6

-> Fossil with well pronounced ribs.
-> Cretaceous period

Back 6

Inoceramus

Front 7

-> Small white V-shaped fossil that look like it has been drawn on the rock
-> Planktonic organism (made up of lots of individuals) that was attached to a float via thin thread.

Back 7

Graptolite

Front 8

-> This is a cast of the external skeleton of a fossil
-> Consists of 3 main parts: Head (Cephalon), central ribbed area (thorax) and a tail (Pygidium)
-> Cockroach of the Cambrian seas
-> Sane group includes NZ's oldest fossil

Back 8

Trilobite

Front 9

-> Large block containing several clams or pipis in a fine grained grey rock.

Back 9

Bivalves

Front 10

-> Rock sample with spiral shaped fossils

Back 10

Gastropod