8 MINUTES
Published SEPTEMBER 2017

Soft Tissue Found Inside a Dinosaur Bone!

Description

In 2003, an exceptionally well preserved T. rex leg bone was unearthed in the cretaceous rocks of Montana. Upon close examination, Dr. Mary Schweitzer found the bone to contain soft tissue inside - tiny blood vessels and proteins! Some claim that this is evidence of a young Earth, a recent extinction of the dinosaurs. Could this be, or is there another explanation?  

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Papers cited in this animation:

ORIGINAL DISCOVERY OF SOFT TISSUE: 
Soft Tissue Vessels and Cellular Preservation in Tyrannosaurus rex
 
Soft tissue and cellular preservation in vertebrate skeletal elements from the Cretaceous to the present
 
CRITIQUE OF DISCOVERY:
Dinosaurian Soft Tissues Interpreted as Bacterial Biofilms 
 
DEFENSES OF DISCOVERY:
Influence of Microbial Biofilms on the Preservation of Primary Soft Tissue in Fossil and Extant Archosaurs

Molecular analyses of dinosaur osteocytes support the presence of endogenous molecules
 
Testing the Hypothesis of Biofilm as a Source for Soft Tissue and Cell-Like Structures Preserved in Dinosaur Bone
 
10 million year old frog bones with marrow preserved
 
IRON’S ROLE IN PRESERVATION:
A role for iron and oxygen chemistry in preserving soft tissues, cells and molecules from deep time
 
OTHER DINOSAURS WITH SOFT TISSUE DISCOVERED:
Mass Spectrometry and Antibody-Based Characterization of Blood Vessels from Brachylophosaurus canadensis
 
Evidence of preserved collagen in an Early Jurassic sauropodomorph dinosaur revealed by synchrotron FTIR microspectroscopy
 
Soft sheets of fibrillar bone from a fossil of the supraorbital horn of the dinosaur Triceratops horridus
 
Hemoglobin-derived porphyrins preserved in a Middle Eocene blood-engorged mosquito

Molecular preservation in Late Cretaceous sauropod dinosaur eggshells