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Re: [dinosaur] How many end-Cretaceous dinosaur genera were there



There are about 11,000 species of named living bird species, but I wouldn't use 
that as a gauge for the likely number of non-avian dinosaurs at any time 
interval. Species density within clades is always highly uneven. 

--Mike

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> On Dec 3, 2016, at 7:18 PM, Ruben Safir <ruben@mrbrklyn.com> wrote:
> 
>> On 12/03/2016 10:12 PM, john-schneiderman@cox.net wrote:
>> I am not aware of any current world-wide census of terminal late Cretaceous 
>> Dinosaur genus/species. But there is an estimate of between 628 and 1076 
>> dinosaur species existed prior to the K-Pg event. I'm referencing the study 
>> by Jean Le Loeuff
> 
> 
> Does that make sense?  How many bird species are there today?
> 
> 
> Reuvain
> 
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