Sagenopteris
![](/Images/godic/202502/08/Sagenopteris_phillipsi_Natural_History_Museum_v18596_Retallack_19802159.jpg")
Sagenopteris are leaves of extinct genus of seed ferns.
Sagenopteris" has palmately arranged leaves with anastomosing venation
Sagenopteris
英语百科
- negative differential drift velocity
- negative differential mobility
- Negative Differential Resistance
- negative differential resistance device
- negative differential resistance region
- negative dihedral
- negative dihedral angle
- negative diopter
- negative direction
- negative discipline
- negative disclosure
- negative discount
- negative dislocation
- negative dispersion
- negative displacemenet
- negative displacement
- negative displacement pump
- negative dissipation
- negative dissipation instability
- negative distortion
- negative dobby
- negative doctor test
- negative draft
- negative dromotropic action
- negative dromotropic effect