Braciopoda body stufff Flashcards
Sessile
Are atached to the subsrate
sedentary
Not physically attached to substare but cant really move ether
Commissure
Contact line of valves
Pedicle (ventral) valve
“top” valve where the pedicle is attached
Pedicle foramen
A circular opaning
Teeth
Found on Pedicle valve
Diductor Muscles
Open valves and are attached to the cardinal process
Cardinal Process
Where the diductor muscles atach to. this is found right at the back of the valves
Adductor muscles
Close the valves
umbo
the sholder of the valves (curved part at the back)
Brachial (dorsal) valve
“Bottom” valve.
Lophophore
Feeding apparatus
what is associated with the Pedicle Valve?
Pedicle Foramen
teeth
sulcus
what is associated with the brachial valve?
Brachiophore
sockets
cardinal process
fold
one pair of muscle scars from the adductor muscles
(the diductor muscles atach to the cardinal process)
sockets
Found on the brachial valve
its where the teeth
Interarea
Flat surface between the pedicle valve beack/ umbo and the hinge line.
contains the pedicle opening (trangle hole)
Brachiopod ornament
Features on the shell surface
Concentric
type of Brachiopod ornament: subparallel to commissure
Radial
Type of Brachiopod ornamen: radiating from umbo
Ribs/ costae
and plicae
Costae and plicae
like ribs but are just projections above shell surface
Plicae are minor folds in the shell
both produce the zig zag pattern
the three types of shell ultrastrucutre
1) Impunctate: no holes through shell
2) Pseudopunctate: holes that go partially through shell for strengthening, shell repair and or for sensory organs
3) Punctate: holes
Brachidium
Lophophore support
What joins the Brachiopods and the Bryozoans?
The lophophore so the conecting term is called Lophophorates
