Dinosaur Soft Tissue Discovered August 2005


Dinosaur Soft Tissue Discovered August 2005

Secular position:

Some new and previously unknown fossilization process has preserved these soft tissues for millions of years.

Counter position:

Soft tissues that are flexible, transparent, with collagen, blood vessels, and perhaps red blood cells with DNA are not from a specimen millions of years old, perhaps thousands of years old but certainly not millions of years old.


Dinosaur Soft Tissue Discovered

Fully excavated in August of 2005, after years of hard and dedicated field work, Mary Schweitzer Paleontologist, PhD, Paleo-biology, Evolutionary Biologist, and Molecular Biologist of North Carolina State University and her team unearthed a Tyrannosaurus rex fossil they discovered in Hell Creek Montana.   The specimen was estimated to be 65 million years old. The T. Rex was fondly nicknamed ‘B. Rex’ and then ‘Bob Rex’ until later when “Bob” until he was discovered to be a “she”, in fact discovered to be a pregnant eighteen year old female.

How was the Soft Tissue Discovered?

The discovery of soft tissue occurred during the transport of the specimen. Jack Horner a curator at the Museum of the Rockies of Bozeman Montana explained regarding the process of securing the specimen from its sandstone grave, “The dinosaur was under an incredible amount of rock, when it was collected, the specimen was very far away from [the] road, and everything had to be done by helicopter. The team made a plaster jacket to get part of the fossil out, and it [the fossil specimen] was too big for the helicopter to lift. And so we had to take the fossil apart. In so doing, we had to break a thighbone in two pieces. When we did that, it allowed [our paleontologist Mary Schweitzer] to get samples out of the middle of the specimen. You don’t see that in most excavations, because every effort is made to keep the fossil intact. Because the leg bone was deliberately broken in the field, no preservatives were added. As a result, the soft tissues were not contaminated.”1

Textbook Fossilization was wrong?

Prior to the discovery, any textbook would report that during fossilization of blood vessels, skin, soft tissues, and muscle would certainly decay and disappear very quickly. No textbook expected soft tissues to last on a fossil for more than thousands of years even under the very best of conditions. Now here were these soft tissues found with transparent, pliable blood vessels containing red blood cells [and Jurassic Park fans even perhaps yet to be confirmed DNA]. How could these soft tissues have survived thousands of years let alone the bewildering idea of some 65 million years? Mary Schweitzer stated in a 2014 interview considering the magnitude of what the evidence implied. She said, “In the end it left two alternatives for interpretation: either dinosaurs’ aren’t as old as we think they are, or maybe we don’t know exactly how these things preserved.”2

Soft Tissue Common in fossils?!

The evidence overwhelmed the scientific community as they collectively sought answers to this quickly growing “controversial” soft dinosaur tissue discovery. The discovery was controversial because the evidence did not fit into any accepted model. How could a specimen millions of years old still have flexible soft tissue? To add fuel to this fire, it was found that in fact it was common for soft tissue to found in fossil specimens. It was found that about 50% of the samples tested [some specimens coming from the Jurassic period supposedly some 145.5 million years old] had soft tissues.3

How had soft tissues never been discovered before?

In light of this stunning new revelation that approximately 50% of the samples had soft tissue, a new question surfaced: why hadn’t tests been conducted on literally any other past collected fossil specimen?   This question was proposed to Thomas Holtz Jr. of the University of Maryland he said, “The reason it [hadn’t] been discovered before is no right-thinking paleontologist would do what Mary did with her specimens”4 [emphasis added]. Clearly, “right-thinking” here refers to any scientist assuming current accepted models would not expect to find such evidence. Of course, since the 1800’s and the domination of Darwinian evolutionary models no ‘right-minded’ scientist would expect to find soft tissue in bones supposed to be millions of years old, and as history proves, literally no one did. In other words, if it does not fit “the model” science never looked.

Solution to soft tissue preservation theorized: Iron

By 2007 the scientific community could breathe a sigh of relief. Mary and her team did research and found that “iron is in abundance in the blood which is highly reactive with other molecules, so the body maintains these molecules in tight confines. Iron binds to molecules which prevent these molecules from wreaking havoc on the tissues of the body. It was these iron embedded particles [called hemoglobin]. She explained in her analysis that “after death…iron is set free from its cage. It forms minuscule iron nanoparticles and also generates free radicals, which are highly reactive…involved in aging.”3

“We know that iron is always present in large quantities when we find well-preserved fossils, and we have found original vascular tissues within the bones of these animals, which would be a very hemoglobin-rich environment after they died,” Schweitzer says.5 “The[se] free radicals cause proteins and cell membranes to tie in knots, they basically act like formaldehyde.”3

Iron as the solution was difficult to imagine as these elements and biological soft tissues certainly were not new to science. It is difficult to conceive that any substance could retain soft tissue and protection from decay for a thousand years, let alone tens of millions of years! Upon closer examination of the iron research and data more problems emerged.

Samples required rapid covering in perhaps a flood event

As a side note, the publication also notes that it was special circumstances that these bones were presumed to be covered quickly [not allowed to decay normally] as in a flood event and with sandstone which is porous and keeps away bacteria. Therefore, the right conditions of the sample being “covered rapidly by sandstone in perhaps a flood event”6 combined with iron acting like a formaldehyde that could last millions upon millions of years science had it explanation and Darwinian evolution was still safe.

Turns out Iron is not responsible for all soft-tissue preservation

A paper was published by Mary Schweitzer’s team ‘A role for iron and oxygen chemistry in preserving soft tissues, cells and molecules from deep time’. A co-author on that paper commented on some of the photographs. He confirmed that there was soft tissue which displayed no evidence of iron. He said, “we saw no iron particles or crystals in association with [all of] the soft tissue samples”. In fact, “while we saw iron inside partially-degraded tissues and believed that iron might help preserve soft tissue, iron was probably not responsible for all soft-tissue preservation.”5 [Emphasis added].   Also laboratory tests have so far shown that the iron theory has retained samples for 2 years—certainly a far cry from tens of millions of years. Also, the experiments have been at room temperatures with no varying temperatures, humidity, freeze/thaw cycles, or natural phenomena.4


  1. National Geographic “T. Rex Soft Tissue Found Preserved” Hillary Mayell March 24, 2005.
  2. Biologos Forum “Not so dry bones: an interview with Mary Schweitzer” Emily Ruppel July 21, 2014.
  3. LiveScience “Mysterious Intact T. Rex Tissue Finally Explained” by Stephanie Pappas November 27, 2013.
  4. Smithsonian “Dinosaur Shocker” Helen Fields May 2006.
  5. Proslogion “An Explanation that is Not Exactly Iron-Clad” Dr. Jay L. Wile December 2, 2013.
  6. NC State University “Iron Preserves, Hides Ancient Tissues in Fossilized Remains” Tracey Peake November 26, 2013.