PsychoSarah
Chaotic Neutral
That sounds like a personal problem rather than an objective problem. Also, both whales and dolphins have clearly defined forelimbs, made more obvious when you look at their skeletal structure. Plus, I'd say dogs quite clearly demonstrate that size can definitely be drastically changed over time. Not that I am saying it is plausible to breed for a whale sized dog, there are structural complications related to terrestrial organisms that aquatic ones don't have to deal with. Also, it's not like Pakicetus evolved like a Pokemon and the blue whale was its final form."In the case of Pakicetus, the environment in which it lived (by shorelines), the position of its eyes on top of the head, and the type of wear on the teeth all are representative of creatures that primarily hunt from within the water."
I agree that these things can indicate that...however, hunting in the water, and turning into creatures 100 times its size without clearly defined limbs and more is a huge stretch of the imagination.
Oh, I'd use the "could be" type of language only because science doesn't do absolutes, regardless as to how likely it is that Pakicetus is an ancestor of whales and dolphins. Might it be a cousin, much like we and Neanderthals were, and its lineage died out? Sure, but it has got to be closely related to the lineage to have that inner ear structure.So what you are saying (correct me if I am wrong) is that due to some of these factors Paki COULD BE or MIGHT BE a candidate for "common ancestor" of whales and dolphins (not IS)...Okay, I can go with that as what you are saying (disagreeing obviously for the other reasons I mentioned).
Ha, it just shows that I know science utilizes evidence but does not prove. Every scientific conclusion has a chance of being incorrect, and to be honest, without DNA, I'd say it's unreasonable to absolutely assert that Pakicetus MUST be an ancestor of whales and dolphins. It is exceedingly unlikely that it isn't in some way related to that evolutionary line, though, given that tell-tale inner ear.IMO the COULD BE/MIGHT BE qualification is intellectually honest, it shows your objectivity, and it is open minded because it accepts that IT MIGHT NOT BE....
XD never in my life did I expect to have to read a study on how some whale and dolphin species select mates based on ball size. But, yeah, it mentions that it's comparing species that exhibit that sexual selection with those that don't, and noting that the former also seem to have larger pelvic bones than the latter. Which is certainly interesting, but we both know that plenty of aquatic organisms get by without having a pelvis to attach penile muscles to.The alleged vestigiality of the form and function of the pelvic areain whales and dolphins has been blown up recently...read Sexual selection targets cetacean pelvic bones
Lol, why do whales and dolphins even have penises, when most aquatic vertebrates just have cloacas? Heck, there are even a few mammals that have cloacas, so that's not an excuse. Why give a whale a huge member to have to make additional "design" adjustments to in order to avoid it causing immense drag while swimming? It's silly stuff like this that makes more sense with an unguided, natural process than an intelligent design. Sorry, I'm still laughing from the fact that there are dolphins and whales that care about ball size.Based on this there is no longer any reason to "ASSUME" that in this creature it was once much larger (and shaped entirely different) or had the function of supporting legs...though these researchers may agree with the vetigiality assumption this proves the structure could just be what it is for the purpose it serves in this type of organism (nothing more).
Also, since the paper brought up sexual selection, what designer in their right mind would design creatures to reject perfectly healthy suitors because their feathers weren't colorful enough or because their testicles weren't big enough?
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