Freethought & Rationalism Archive

The Lone Ranger · 04-03-2003, 08:46 PM

Here's a eutherian mammal, a Deer Mouse (Peromyscus maniculatus) from North America:

For comparison, here's a marsupial, a Yellow-Footed Antechinus (Antechinus flavipes) from Australia:

The most recent common ancestor of these two critters lived something like 100 million years ago.

Cheers,

Michael

The Lone Ranger · 04-03-2003, 09:03 PM

This plant is a cactus, Ferocactus echidne. Like all true cacti, it's native to the New World (the Sonoran Desert, in this case). Its spines are modified leaves.

This plant is not a cactus; it's not even a close relative of a cactus. It's a euphorb native to the deserts of southern Africa, Euphorbia obesa. Its spines are modified shoots. Tens of millions of years (at least) separate it from its most recent common ancestor with a cactus.

Minnesota · 04-03-2003, 09:31 PM

Ladyshea,

The corrections were for your own information. As for others being apprised of the fact, I don't think it's that important.

Celsus · 04-03-2003, 10:43 PM

Ok here's my latest endeavour (with thanks to Morpho for the help):

The three animals are one each of the following:

1) African Pouch Rat
2) Antechinus (carnivorous marsupial, related to the Tasmanian devil)
3) Potoroo (also a marsupial, related to the kangaroo)

Which is which?

Edit: apologies to the moderators for the rather rude picture #2

Celsus · 04-03-2003, 10:53 PM

And another simple multiple choice:

Spot the odd ones out:

They are either:
1) Genet
2) Civet
3) Bearcat
4) Quoll
5) Coatimundi

Coatimundi is of the family Procyonidae
Quoll is a marsupial from the family Dasyuridae
The others are all from the family Viveridae

Again, which is which?

(Many thanks to DonnieDarko for hosting the second pic)

Viti · 04-03-2003, 11:33 PM

Quote:

Originally posted by Minnesota
Ladyshea,

The corrections were for your own information. As for others being apprised of the fact, I don't think it's that important.

My internal files have been updated...I just want to make sure everyone leaves this thread with the facts

SULPHUR · 04-03-2003, 11:51 PM

from platypus............monotremes is a classier name than mammals

Celsus · 04-04-2003, 01:42 AM

Last one, I promise.

One of these jellyfish belongs to a completely different class from the others. For reference, mammals and reptiles, for example, belong to different classes.

Which is it?

Wounded King · 04-04-2003, 02:43 AM

Is it the bottom one?

Celsus · 04-04-2003, 03:28 AM

Quote:

Originally posted by Wounded King
Is it the bottom one?

No

04-03-2003, 09:03 PM	#72
The Lone Ranger Veteran Member Join Date: Oct 2001 Location: Eastern U.S. Posts: 1,230	More fun with convergent evolution This plant is a cactus, Ferocactus echidne. Like all true cacti, it's native to the New World (the Sonoran Desert, in this case). Its spines are modified leaves. This plant is not a cactus; it's not even a close relative of a cactus. It's a euphorb native to the deserts of southern Africa, Euphorbia obesa. Its spines are modified shoots. Tens of millions of years (at least) separate it from its most recent common ancestor with a cactus.

04-03-2003, 11:51 PM	#77
SULPHUR Senior Member Join Date: Nov 2002 Location: hobart,tasmania Posts: 551	monotremes from platypus............monotremes is a classier name than mammals

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04-03-2003, 08:46 PM	#71
The Lone Ranger Veteran Member Join Date: Oct 2001 Location: Eastern U.S. Posts: 1,230	Here's a eutherian mammal, a Deer Mouse (Peromyscus maniculatus) from North America: For comparison, here's a marsupial, a Yellow-Footed Antechinus (Antechinus flavipes) from Australia: The most recent common ancestor of these two critters lived something like 100 million years ago. Cheers, Michael

04-03-2003, 09:31 PM	#73
Minnesota Regular Member Join Date: Mar 2003 Location: Minnesota Posts: 172	Ladyshea, The corrections were for your own information. As for others being apprised of the fact, I don't think it's that important.

04-03-2003, 10:43 PM	#74
Celsus Veteran Member Join Date: Aug 2001 Location: Singapore Posts: 2,875	Ok here's my latest endeavour (with thanks to Morpho for the help): The three animals are one each of the following: 1) African Pouch Rat 2) Antechinus (carnivorous marsupial, related to the Tasmanian devil) 3) Potoroo (also a marsupial, related to the kangaroo) Which is which? Edit: apologies to the moderators for the rather rude picture #2

04-03-2003, 10:53 PM	#75
Celsus Veteran Member Join Date: Aug 2001 Location: Singapore Posts: 2,875	And another simple multiple choice: Spot the odd ones out: They are either: 1) Genet 2) Civet 3) Bearcat 4) Quoll 5) Coatimundi Coatimundi is of the family Procyonidae Quoll is a marsupial from the family Dasyuridae The others are all from the family Viveridae Again, which is which? (Many thanks to DonnieDarko for hosting the second pic)

04-04-2003, 01:42 AM	#78
Celsus Veteran Member Join Date: Aug 2001 Location: Singapore Posts: 2,875	Last one, I promise. One of these jellyfish belongs to a completely different class from the others. For reference, mammals and reptiles, for example, belong to different classes. Which is it?

04-04-2003, 02:43 AM	#79
Wounded King Veteran Member Join Date: Mar 2003 Location: Edinburgh Posts: 1,211	Is it the bottom one?

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