Good day 2 every1!
Right now:
1.) 571 non-avian dinosaur genera are known (3.15/yr from 1824)

2.) Year 2005 is on the 5th place with 21 genera described so far (1. 2003 - 30, 2. 1998 - 26, 3. 2001 - 25, 4. 1999 - 24)

3.) Countries per number of dinosaur genera:
USA - 137
China - 121
Mongolia - 59
Argentina - 59
Canada - 44
GBR - 40
France - 22
Portugal - 18
RSA - 15
Brazil - 14
Niger - 14
Australia - 13
Spain - 13
Germany - 11
Uzbekhisthan - 11
Morroco - 10
Tanzania - 9
India - 9
Madagascar - 8
Romania - 8
Lesotho - 7
Algeria - 5
Egypt - 5
Russia - 5
Thailand - 4
Uruguay - 4
Zimbabwe - 4
Mexico - 3
Tunisia - 3
Kasakhstaan - 2
Belgium - 2
Japan - 2
.... (total of 49 countries)

Period with highest number of genera per Ma...Maastrichtian 113/5.1 - 22.1 gen.
smallest ...Aalenian 7/4.0 - 1.7 gen.
Any comments?

You forgot Antarctica - not a country but it has 1 at least

No, I have it too....but there is just too many countries left with a single dinosaur genus found. I tally total of 49 countries with at least one.

Source? <_<

In short: Internet (Dinosaur Genera List and other webs)

This is interesting info. Thanks! Care to do statistics on fish fossils???? :D :crazy:

Speaking of fish, what do you know about Megalocoelocanthus?

We have a vey large one out of the Niobrara (4m long) and we're going to be putting the skull back together in a few months, as soon as I finish the last preoperculum. Paper thin, I hate this thing.

It's a large coelocanth. :D

Helpful!

I was looking for a more specific answer, as this thing is wierd, even for a fish!

Hooray for a 3-part neurocranium! And no pointy teeth either.

Sounds like a cool find. Post pics when you can.

more stats. Taxa reported in the most countries:

1) Iguanodon
2) i don't know
3) i don't know

Hmmm....I'll probably do a little investigation...
BTW, the complete statistics of mine can be found here (the only problem is that it's completely in czech ;o)
http://dinosaurus.bloguje.cz/155186_item.php

A lot of those aren't referable to Iguanodon. :P

Iguanodon, countries.

Countries listed in decreasing order of confidence of referral. (Personal viewpoint only, so not many reasons will be given to justify). Also, the country for the type of any taxa (genotype) is automatically listed as the first country.


1)England
2)Belgium
3)Germany
4)Spain
5)USA (as Iguanodon lakotaensis NOT Iguanodon ottingeri)
6)Portugual
7)Mongolia (type of I. orientalis not type of Altirhinus; Norman couldn't seperate I. orientalis from I. bernissartensis in 1998, and listed it under I. bernissartensis in 2004 for his chapter on basal Iguanodontians in the Dinosauria)

as for other places, i have little confidence in these referrals, as Thayer said, are likely to not Iguanodon. But include:
8) France
9) Romania
10) Argentina :eh:

So , i think Iguanodon could realistically be represented in 7 or 8 countries.

It's a skewed stat which depends on the politics of an area. Europe is pretty well devided, so European dinosaurs will naturally feature high on a such a stat (represented in most countries)

In Belgium, there are more than 2 genera. Well, alright Iguanodon and Megalosaurus are the most well known... but teeth from the Late Triassic of Habay-la-Vieille are referred to Liliensternus sp., and others to undeterminate prosauropods and basal sauropods.
And there's still that partial skeleton of a Maastrichtian bird from Lanaye, Montagne St-Pierre.

Refer to Norman 1996, he refers Iguanodon orientalis to Iguanodon bernissartensis. :P Iguanodon lakotaensis is almost certainly not related to Iguanodon proper. ;)