Phylum Brachiopoda Flashcards
Subphylum Linguliformea Cambrian- Recent
Looks like a clam
long valves
Lack teeth and sockets
Order Orthida Cambrian-Permian
Looks like a fan
has a flat brachial valve/ bottom valve
curved Pedical valve
has deffineat ribs
has a pedical opening (triagular)
has an inter area
dosnt really have a fold and sulcous
Order Rhynchonellida Ordovician - Recent
ANGRY COFFE BEEN HAHAHA
Very high ribs
Can be sphirical
Both the brachial and pedicle valves are curved and have a zig zag commissure
has a little pedicle forman (curcular oppaning)
Has a fold and sulcus
pritty well rounded
Order Spiriferida Silurian- Jurassic
has wings
has a very deffineatn Fold ans sulcus!!!!!
Has a pedicle opening (triangle)
Strophic (straight) hing line
Shark fin like umbo??
Order Atrypida Ordovician- Devonian
Looks like the shells from marrio Kart
Has a very larg and rounded pedicle valve with curvy outy edges
Can have a fold/ sulcus
Commissure is very stight and not zig zagy
Order Terebratulida Devonian- Recent
looks like an oil lamp
Has a pedicle foramen -> THE LARGEST OF THEM ALLL
order Pentamerida Cambrian- Devonian
No fold/ sulcus
has a wierd jutty outy nose thing wich is the “5th” side of the Penta
Order Strophomenida Ordovician- Devonian (mississipian)
Concavo- convex
always stophic (straigt hing line)
dosn’t usually have a pedicle foramen
Lack spines
Order Chonetida Ordovician- Permian
Has an inter area
concavo convex
has wings
spines only at pedicle valve hingline
umbo week or absant
Order Productida Devonian- Permian
spines
big
