Term
|
Definition
| vertebrates. four unique anatomical features: notochord, dorsal, hollow nerve cord, pharyngeal slits, muscular potanal tail. |
|
|
Term
|
Definition
| longitudinal, flexible rod located between the digestive tube and the nerve cord. skeletal structure. |
|
|
Term
|
Definition
| most are sessile marine animals that adhere to rocks, docks, and boats. others are planktonic. possible link to chordates. |
|
|
Term
| cephalochordates (lancelets) |
|
Definition
| ideal chordate. believed to be ancestor or chordates. |
|
|
Term
|
Definition
| blocks of mesoderm that muscle segments develop from. |
|
|
Term
|
Definition
| precocious developments of sexual maturity in a larva. |
|
|
Term
|
Definition
| group of embryonic cells that form near the dorsal margins of the closing neural tube. |
|
|
Term
|
Definition
| shelled, water-retaining egg. |
|
|
Term
|
Definition
| reptiles, birds, and mammals collectively called amniotes because of amniotic egg. |
|
|
