You mean actual validated fossils of the fins or lobes?
You suggested your theory and it was rejected due to not being liked? or were there any scientific claims that contradict your theory?
Do you have genuine fossils demonstrating such transitions? that were found in a fitting timeline layer?
Can you elaborate on the lobes?
See it fitting how?
Why is it reversed in the sea? and is it reversed for all other sea mammals?
Can you offer the alternate "tree of evolution" you suggest?
Land whale fossils
The evolution of whales
From Britannica:
"There is near universal agreement that tetrapods originated somewhere within the fleshy-finned or lobed-finned fishes (
Sarcopterygii), although total agreement does not exist on which sarcopterygian group is ancestral to them. The difficulty in deciding tetrapod ancestry stems from the inability to determine conclusively which traits are ancestral and which traits arose after one group diverged from another. Furthermore, the
diversity of skeletal anatomies among the early tetrapods confuses this issue; when comparing the skeletal features of one group with those of another, it is unclear whether the comparison is between the same elements or ones that appear the same but arose from different ancestral structures. Nevertheless,
anatomy share most of the features characteristic of early tetrapods. Fossil fragments of V. curonica—which included parts of a pelvis, a shoulder girdle, and a braincase—have been unearthed in Latvia and dated to 365 million years ago. However, tetrapods emerged much earlier, as indicated by fossil footprints set down in marine rocks dated to 397 million years ago."
Based on physiology, do you think limbs which aren't connected to vertebrae suddenly become functioning arms and legs? The fins help the fish to change direction. It can't walk on land for that very reason. I'll accept the lungfish lungs as it uses lungs and other air breathing amphibious fish. It can slither across land.