Post by meadowview on Dec 1, 2010 15:19:51 GMT
Hi Folks:
I looked into this statement from TerraForums:
"There are fossil records of Dionaea pollen in Central Europe from about 14 million years ago. It's thought Dionaea's was very wide spread as with Aldrovanda. Aldrovanda and Dionaea are thought to have come from a common ancestor some 65 million years ago.
www.amjbot.org/cgi/content/full/89/9/1503"
We went back and checked the Muller 1981 citation for Dionaea pollen in Europe and could not find it in the original research paper (or at least it wasn't in the section on the Caryophyllales). Furthermore, the references to Aldrovanda paleo-pollen are also questionable - see Lubomir Adamec comments:
"I know the well-known and cited paper by Yakubovskaya (perhaps 1991) describing seeds of different palaeo Aldrovanda species from Bielorussia. However, the finding of my colleagues from Prague that the Palaeoaldrovanda splendens fossils are in fact insect's eggs has not yet been published, to my best knowledge."
So.. do we really have any credible, substantial evidence for paleo Dionaea or Aldrovanda? Look forward to hearing from you.
Sincerely,
Phil Sheridan, Ph.D.
Director
Meadowview Biological
Research Station
I looked into this statement from TerraForums:
"There are fossil records of Dionaea pollen in Central Europe from about 14 million years ago. It's thought Dionaea's was very wide spread as with Aldrovanda. Aldrovanda and Dionaea are thought to have come from a common ancestor some 65 million years ago.
www.amjbot.org/cgi/content/full/89/9/1503"
We went back and checked the Muller 1981 citation for Dionaea pollen in Europe and could not find it in the original research paper (or at least it wasn't in the section on the Caryophyllales). Furthermore, the references to Aldrovanda paleo-pollen are also questionable - see Lubomir Adamec comments:
"I know the well-known and cited paper by Yakubovskaya (perhaps 1991) describing seeds of different palaeo Aldrovanda species from Bielorussia. However, the finding of my colleagues from Prague that the Palaeoaldrovanda splendens fossils are in fact insect's eggs has not yet been published, to my best knowledge."
So.. do we really have any credible, substantial evidence for paleo Dionaea or Aldrovanda? Look forward to hearing from you.
Sincerely,
Phil Sheridan, Ph.D.
Director
Meadowview Biological
Research Station
