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To: Michael_Michaelangelo

Its a list of transitionals from reptiles to mammals which you said doesn't exist.

I'd say your claims have been totally disgraced.


1,947 posted on 02/11/2005 2:04:42 PM PST by shubi (Peace through superior firepower.)
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To: shubi
I'd say your claims have been totally disgraced.

Of course you would! Your interpretation of the data is based on Darwinian assumptions.

Reptile to Mammal Transition: The Reptile-Mammal transition is also claimed to be a complete fossil transition--so complete and convincing that Stephen J. Gould even termed it the "Crown Jewel" of the fossil record. The thinking goes that a major group of reptiles called the Synapsids had a subgroup called the Therapsids which turned into what are called the "mammal-like" reptiles, the Cynodonts, which eventually became true mammals. It is claimed that changing skull bones and locomotio-related morphology show the transition from a reptilian to a mammalian form. Let's take a look at this transition to see just how convincing it really is. Fortunately, some experts have had a few things to say about this transition. The proposed reptile --> mammal transition: Anapsidia (most primitive reptiles) --> Synapsida (Pelycosaurs (Sphenacodonts)) --> Synapsids (Therapsids) --> Synapsids (Therapsids (Cynodontia)) --> early Mammalia --> modern major Mammal groups:

Anapsidia (the most primitive reptiles) --> Synapsidia:
“The ancestors of mammals [synapsids as a group] are identified from the same horizon and locality as the earliest conventional reptile, Hylonomus”.34

Synapsida (Pelycosaurs (Sphenacodonts)) --> Synapsids (Therapsids):
“The transition between pelycosaurs and therapsids has not been documented.”34

Synapsids (Therapsids) --> Synapsids (Therapsids (Cynodontia)):
"Two much more advanced groups of carnivorous therapsids, the therocephalians and cynodonts, appear in the Upper Permian of Russia and southern Africa. We have not established the specific origin and interrelationships of these groups. They may have evolved separately from primitive carnivorous therapsids." 34

Synapsids (Therapsids (Cynodontia)) --> Mammalia
“The transition to the first mammal, which probably happened in just one or, at most, two lineages, is still an enigma.”35
“[we] cannot yet recognize the specific [cynodont] lineage that led to mammals.”34

(34)Carroll, Robert L. 1988. Vertebrate Paleontology and Evolution. W. H. Freeman. New York, Pg. 361, 397, 377, 398, 395.

Link

1,955 posted on 02/11/2005 2:42:05 PM PST by Michael_Michaelangelo (The best theory is not ipso facto a good theory. Lots of links on my homepage...)
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To: shubi; Michael_Michaelangelo
Its a list of transitionals from reptiles to mammals which you said doesn't exist. I'd say your claims have been totally disgraced.

That list is overly confident and quite open to interpretation The first definite marsupial. Known only from teeth. is not definitive

1,956 posted on 02/11/2005 2:43:24 PM PST by Tribune7
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