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Re: Prehistoric Plankton Predators (PPP for short)



What fossil evidence would we really find for filter-feeding sharks? I
wouldn't expect much, if anything. Also, I heard that there is some possible
giant filter-feeding fish from the Cretaceous of Europe, but the exact name
escapes me.
Peace,
Rob

Student of Geology
400 E. McConnell Drive #11
Northern Arizona University
Flagstaff, Az. 86001
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----- Original Message -----
From: "Dino Rampage" <dino_rampage@hotmail.com>
To: <dinosaur@usc.edu>
Sent: Saturday, November 23, 2002 8:41 AM
Subject: Prehistoric Plankton Predators (PPP for short)


> Are there any giant plankton-feeders from the Mesozoic? It really seems
odd
> to me that throughout the Mesozoic, no animal seemed to take advantage of
> the plankton & grow to a huge size. Just look at our modern-day oceans:
> Among the elasmobranchs we have the Whale Shark (Rhincodon typus) the
> Basking Shark (Cetorhinus maximus) & the Megamouth Shark (Megachasma
> pelagios) the various species of Mobula & Manta rays, (Mobula sp. & Manta
> sp.) The teleosts have provided us with the Ocean Sunfish (Mola sp.), and
> let's not forget the 10-13 species of Mysticete or baleen whales.
>
> If our modern oceans can support such a wide diversity of giant plankton
> feeders, why not the oceans of the Mesozoic? Surely the oceans then were
> just as bountiful; I cannot believe that the oceans of the Mesozoic were
> plankton-deficient. Or were the predatory marine reptiles & sharks so
> successful that large peaceful plankton-feeders could not evolve until
they
> were wiped out after the K-T?
>
>
>
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