Thursday, March 6, 2014

Correcting my orchard post

I try to be fair with people I disagree.  On that note, I want to publish a correction to a previous post about the creationist orchard.  You can read the full post by clicking on the next link.

Creation Orchard to Nowhere

image

...I am unclear about the bird.  Certainly there are pre-cenozoic birds, and some that would fit into one of the avian kinds. 

Correction 3-6-14:  Originally the last sentence said that no Mesozoic bird would fit into one of the avian kinds.  However, this probably is not true.  The entire order of Psittaciformes is considered the "Parrot Kind" by Lightner.  A Cretaceous parrot was found in 1998.

Also, a fossil Anseriformes has been found.  Here, it gets more complicated.  Lightner divides the order Anseriformes into three kinds.  While the fossil appears more closely related to the family Anatidae which Lightner calls the "Duck Kind" it is unclear if Lightner would place the fossil in this group.  In fact, the initial kind estimates as a rule tend to avoid all fossils.  Also, if there were Cretaceous Anseriformes, that seems to suggest that there were Cretaceous Galliformes, because molecular data suggests that Anseriformes and Galliformes both belong to the clade Galloanserae.  Lightner, of course, believes that Galliformes coexisted with dinosaurs, but for other reasons.  While she subdivided the order Anseriformes into three kinds, she kept the order Galliformes as one created kind.  She was forced to do this, because four of the five families have examples of cross family hybridization.   

[1] Wang, Xiaoming and Richard H. Tedford Dogs Their Fossil Relatives & Evolutionary History (New York: Columbia Press, 2008) 23

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