Evolution Intelligent Design stasis

Reptile’s skull changed little in 22 million years

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A 3-D imaging analysis shows that the skull is nearly identical to one much older:

Elasmosaurid plesiosaurs, lookalikes of the mythical Loch Ness monster, were the largest of the long-necked plesiosaurs, growing as long as 43 feet with half of that length deriving from their small heads and very long necks. Paleontologists from SMU (Southern Methodist University), as part of an international team called Projecto PaleoAngola, based their findings on a CT scan of the 71.5 million year old skull from a species of elasmosaurid called Cardiocorax mukulu.

This detailed 3D model allowed the paleontologists to compare the well-preserved skull of C. mukulu found in Angola to that of other species of elasmosaurids. They found that C. mukulu looked nearly identical to skulls that came from much older elasmosaurids, including one found at Cedar Hill, Texas, in 1931, whose 93-million-years old remains can be found at SMU’s Shuler Museum of Paleontology.

“The skull shape, organization of muscles, and the shape and arrangement of the teeth largely reflect how an animal acquired prey,” said co-author Michael J. Polcyn, research associate and director of SMU’s Digital Earth Sciences Laboratory “The interesting aspect of Cardiocorax mukulu is that it appears that this animal’s predecessors adopted a particular feeding style early in their evolutionary history, and then maintained the same basic skull structure for the next 22 million years”

Southern Methodist University, “CT scan of an ancient reptile skull reveals little evolutionary change over 22 million years” at ScienceDaily

One researcher’s comment is revealing:

“Basically, in anything except living fossils, you don’t go 22 million years without evolving,” said [Louis] Jacobs, professor emeritus of Earth Sciences at SMU and president of ISEM at SMU.

Southern Methodist University, “CT scan of an ancient reptile skull reveals little evolutionary change over 22 million years” at ScienceDaily

Well, first, if that’s true, maybe they were the “living fossils” of their day. Maybe it is not even that unusual.

In any event, the horseshoe crab’s brain itself didn’t change much in over 300 million years. Any chance there is a pattern here that devotion to Darwinism prevents people from seeing?


You may also wish to read: Do brains really evolve? The horseshoe crab’s brain didn’t. At Science News: “The preserved central nervous system lends insight into the ancient crab’s behavior, the researchers say. Because the fossil brain is so similar to the brains of modern horseshoe crabs, Bicknell says, it’s safe to say the ancient animal’s walking, breathing and even feeding habits were probably similar to horseshoe crabs’ today, including eating with their legs.”

2 Replies to “Reptile’s skull changed little in 22 million years

  1. 1
    Pearlman says:

    22M current consensus ‘years’ ago RCCF calibrates to mid/late/just after the 1656 anno-mundi Mabul impacts year aka global flood by Noach epoch. The cause and effect for the onset of The ice ages.

    So this represents the transition to modern reptile dominance, as dinos w/ legs underneath, went extinct during the Mabul, due to hyperthermia, whereas founding modern kinds ere able to last longer out of the ark in the water and debris matts… .
    reference “RCCF’ Pearlman YeC volume I ‘Recent Complex Creation Framework’ for the alignment of Torah testimony, science and ancient civ.

  2. 2
    Fasteddious says:

    I wonder how much of the “evidence” for “evolution” is based on the supposed changes in “species” over these millions of years. Each new dinosaur find tends to get named as a new species – who does not want to name a new dinosaur? – even if the differences between that find and previous dinosaurs are trivial. Perhaps in reality, they are all essentially the same species, with minor attribute shifts over time? Thus, just as all dogs are the same species, perhaps all hadrosaurs, or in this case, all plesiosaurs, are the same species. This does not mean that all dinosaurs were the same species, of course. Rather, maybe it means that maybe there are fewer “species” of dinosaurs than listed by different names? How many plesiosaur “species” are there? And just how different are they really re: size, shape, skeletal design, etc.? I confess I am not a palaeontologist, so I could be way off track here, but I wonder how rigorously applicable the word “species” is to fossil skeletons separated by millions of years?

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