Re: Bipedalism in different substrates

From: Pauline M Ross (pmross_at_ross-software.co.uk)
Date: 07/03/04 

Date: Sat, 03 Jul 2004 15:39:54 +0100

On Sat, 03 Jul 2004 14:12:18 GMT, "Bob Keeter" <rkeeter@earthlink.net>
wrote:

[Snipped most of this - impossible to reply without repeating myself]

>If Potts had included the rather obvious fact that hominid existence is
>impossible without drinking water, would that appease you? Or do you
>require that he also add in totally conjectural wading and swimming
>contexts?

I would suppose that anyone writing a paper on hominid *environments*
would investigate the whole environment, not just part of it.

>> [Pauline] Well, now, all aquatic and semi-aquatic mammals under 150 lbs, so that
>> will include quite a 'host' of the smaller dolphins and porpoises,
>> right? So quite a few that have lost their fur. :-)
>
>Nope. Check the weights of the adult dolphins and porpoises.[Snip] So, how many
>dolphins and porpoises are there that are routinely smaller than 150 lbs?

Nope yourself. La Plata dolphin (a river dolphin) 32-52kg; Commerson's
dolphin c 50 kg; black dolphin c 45kg; Heaviside's dolphin c 40 kg
(but max 74kg); Hector's dolphin c 40kg; Tucuxi 36-45 kg; southern
right whale dolphin (!) c 60 kg; Risso's dolphin c40 kg (male);
vaquita (a porpoise) 35-50 kg.

Just pointing out some FACTS, Bob. You like FACTS, don't you?

No time for the rest, but then we're never going to agree, are we?
Time to move on to something more productive. 

-- 
Pauline Ross

Relevant Pages

  • Re: Generators Revisited
    ... I could probably make a case that the correct name is Dolphin ... Delphinidae while porpoises are classified into Phocoenida. ... and dogs, but they are genetically no more closely related than cats and ... seldom exceed 7 feet in length, whereas many dolphins can exceed 10 ...
    (rec.scuba)
  • Re: Generators Revisited
    ... I can't say that whales do, but I can confirm that porpoises do. ... fish off the bite as I have never had a good days fishing with them ... You refer to something that is a dolphin as something ...
    (rec.scuba)