Random Lineage 1
-Myxinimorphi (hagfish)
-Petromyzontimorphi (lampreys)
-Ostradoderm (jawless extant)
-Gnathostomata
What does superclass Myxinimorpi give to?
Myxini (hagfish)
What does superclass Petromyzontimorphi give to?
Petromyzontida (lampreys)
What form was earliest vertebrates?
swimming larva
how many gill slits does elasmobranchii have?
5-7 gill slits
What does superclass Gnathostomata give to?
- Placodermmorphi (extant)
-Chondrichthymorphi (cartilage skeleton)
-Teleostomi
What does chondrichthymorphi give to?
Chondrichthys (cartilage skeleton)
What does chondrichthys give to?
-Holocephali (chimeras)
-Elasmobranchii(sharks,rays,skates)
What was the earliest evidence of "bone-like" material?
enamel cone shaped teeth in the conodonts
What makes dipneusti/dipnoi so unique?
lungs
estivation
archipterygial
secondary autostylic jaw
What does Teleostomi give to?
-Actinopterygii
-Sarcoptergii
-Acanthoi (extant)
What does Sarcopterygii give to?
-Actinista
-Dipnoi
-Tetrapods
-Osteolepidomorpha
What does actinopterygii give to?
-Neopterygii
-Acipenseriformes (sturgeon/paddlefish)
-Polyteriformes (lobed pectoral fish)
-jawless
-lacked paired fins
-bony armor
-cartilage skeleton
Coelacanth are part of Actinista, what makes these unique?
amphystylic jaw
unbranched lepidotricha
large cosmoid scales
diphycercal tail
What does neopterygii give to?
-Lepisosteiformes (gar)
- Amiiformes
-Teleostei
What does teleostei give to?
-osteoglossomorpha (bony tongue)
-elopomorpha (eel)
-ostarioclupeomorpha
-Euteleostei
What does ostarioclupeomorpha give to?
-clupeomorpha (herring/shades)
-osteriophsi
What did jaws originally evolve from?
bones from the upper gill arch formed the upper and lower jaw, and eventually second gill arch changed to support skull and jaw
What scale types are in Teleostei?
cycloid and ctenoid
What does euteleostei give to?
-protacanthopterygii (trout/pike)
-paracanthopterygii (perch/cod)
-acanthopterygii (sunfish/bass)
what made placoderms so unique?
craniovertebral joint and primitive jaw
What has made Teleostei so successful?
reduction of bony elements