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**Adam Khor** · 12-04-2012, 16:55

A complex placenta is normal for mammals but exceedingly rare in a lizard (or maybe we haven´t been looking for it?)

http://discovermagazine.com/2012/mar...nlike-placenta

Birdnuts · 13-04-2012, 03:17

A possibile missing link between mammals and reptiles??

Hollzy · 16-04-2012, 19:23

Sounds like it!

**Mickeroo** · 17-04-2012, 19:10

Very interesting indeed. Does the viviparous lizard not have soe sort of placenta too since it gives birth to live young?

aidoh · 28-04-2012, 18:36

I don't think so. The same species of viviparous lizard that occurs in ireland oviposits in more arid climates. The fact that it gives live birth up this end of Europe is apparently a recent adaptation to cold. I'd guess they retain their embryos until they're developed enough to release, much in the same way that a lot of sharks do.

12-04-2012, 16:55	#1
Adam Khor Moderator Join Date: Mar 2011 Posts: 2,580 Adverts \| Friends Mod: Palaeontology, Zoology	A lizard with a placenta! A complex placenta is normal for mammals but exceedingly rare in a lizard (or maybe we haven´t been looking for it?) http://discovermagazine.com/2012/mar...nlike-placenta

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13-04-2012, 03:17	#2
Birdnuts Registered User Join Date: Mar 2009 Location: Blessington, Co. Wicklow Posts: 3,901 Adverts \| Friends	A possibile missing link between mammals and reptiles??

16-04-2012, 19:23	#3
Hollzy Registered User Join Date: May 2011 Location: Dublin Posts: 326 Adverts \| Friends	Sounds like it!

17-04-2012, 19:10	#4
Mickeroo Moderator Join Date: Oct 2004 Location: Not here Posts: 10,194 Adverts \| Friends Mod: Halo, Nature & Bird Watching, Surfing, Zoology	Very interesting indeed. Does the viviparous lizard not have soe sort of placenta too since it gives birth to live young?

28-04-2012, 18:36	#5
aidoh Registered User Join Date: Jun 2009 Posts: 202 Adverts \| Friends	I don't think so. The same species of viviparous lizard that occurs in ireland oviposits in more arid climates. The fact that it gives live birth up this end of Europe is apparently a recent adaptation to cold. I'd guess they retain their embryos until they're developed enough to release, much in the same way that a lot of sharks do.