Navigation Links
CT scan and 3-D print help scientists reconstruct an ancient mollusk

Using a combination of traditional and innovative model-building techniques, scientists in the U.S. and a specialist in Denmark have created a lifelike reconstruction of an ancient mollusk, offering a vivid portrait of a creature that lived about 390 million years ago, and answering questions about its place in the tree of life, as described in the Sept. 18 edition of the journal Palaeontology.

The model of the oval-shaped sea creature, called a multiplacophoran, which was covered with stiff plates and a ring of spines, resulted from a collaboration between Jakob Vinther, a postdoctoral researcher at The University of Texas at Austin's Jackson School of Geosciences, and Esben Horn, owner of the model making company 10 Tons in Copenhagen, with animation help from Ryan Carney, a doctoral student at Brown University.

Working with a delicate specimen of a multiplacophoran partially covered by rock, Vinther used a micro CT scan a noninvasive technology similar to medical CAT scanning to create a three-dimensional view of the fossil. With Carney's help, the CT scan yielded an animated view of the original placement of the creature's dense spines and shells, which had splayed out and decayed prior to fossilization.

The CT scan also produced a three-dimensional cast of the specimen in its reconstructed shape. Working with the cast, the animation and information on living relatives of the multiplacophorans, Horn was able to create a multicolored, textured model in clay, resin and silicone showing how the creature looked millions of years ago, when it crawled on a single, suction-like foot over shells and rocky surfaces in ancient oceans.

The model helps address a debate about how multiplacophorans (which were only discovered in the past decade) relate to chitons, another more widely known plated mollusk that lives on seashores and is commonly eaten in the Caribbean. By dating the origin of modern chitons, Vinther could demonstrate that multiplacophorans are stem group chitons.

"We can now demonstrate that multiplacophorans are distant relatives of the modern chitons, which did not evolve until later in Earth history," said Vinther. "We can also show that they evolved a number of characteristics seen in some modern chitons convergently."

The CT scan was integral to the project, allowing the scientists to see below the surface of the fossil.

"CT scanning is an extremely powerful technique for paleontologists," said Vinther, "since we can look inside fossils without destroying them."

Vinther and Horn describe the process of creating the model in a video produced by the Jackson School of Geosciences and hosted online by National Geographic at

The original fossil was discovered 10 years ago in Ohio by private collector and co-author George Kampouris, who donated it to the Cincinnati Museum of Natural History.


Contact: J.B. Bird
University of Texas at Austin

Related biology news :

1. Nanoengineers can print 3D microstructures in mere seconds
2. Researchers develop rapid method to measure carbon footprints
3. New study: Running mechanics, not metabolism, are the key to performance for elite sprinters
4. In fly DNA, the footprint of a fly virus
5. Human eye inspires clog-free ink jet printer invented by MU researcher
6. Physics confirms sprinters are performing better than ever before
7. Penn researchers improve living tissues with 3-D printed vascular networks made from sugar
8. Chemical fingerprinting tracks the travels of little brown bats
9. Tiny plants could cut costs, shrink environmental footprint
10. lobSTR algorithm rolls DNA fingerprinting into 21st century
11. From 503-million-year-old fungi to recent earthquakes: New Geology posted ahead of print
Post Your Comments:
(Date:10/26/2015)... -- Delta ID Inc., a company focused on bringing secure ... announced its ActiveIRIS® technology powers the iris recognition feature ... NTT DOCOMO, INC in Japan . ... include iris recognition technology, after a very successful introduction ... 2015, world,s first smartphone to have this capability. ...
(Date:10/23/2015)... and GOLETA, California , October 23, ... BIOPAC and SensoMotoric Instruments (SMI) announce a mobile plug ... data captured during interactive real-world tasks SensoMotoric ... integration of their established wearable solutions for eye tracking ... gaze behavior captured with SMI Eye Tracking Glasses ...
(Date:10/22/2015)... -- Synaptics (NASDAQ: SYNA ), a leading developer of human interface ... 30, 2015. --> --> ... percent over the comparable quarter last year to $470.0 million. Net ... or $0.62 per diluted share. --> ... fiscal 2016 grew 39 percent over the prior year period to ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... DIEGO , Nov. 25, 2015  Neurocrine Biosciences, ... Kevin Gorman , President and CEO of Neurocrine Biosciences, ... Healthcare Conference in New York . ... to visit the website approximately 5 minutes prior to ... A replay of the presentation will be available on ...
(Date:11/25/2015)... ... November 25, 2015 , ... A long-standing ... Aerospace Professionals (OPBAP) has been formalized with the signing of a Memorandum of ... with OPBAP leaders Capt. Karl Minter and Capt. Albert Glenn Tuesday, November 24, ...
(Date:11/25/2015)... 2015 The Global Genomics ... professional and in-depth study on the current state ... ) , The report ... definitions, classifications, applications and industry chain structure. The ... markets including development trends, competitive landscape analysis, and ...
(Date:11/24/2015)... Malaysia , Nov. 24, 2015  Asia-Pacific ... contract research organisation (CRO) market. The trend of ... in lower margins but higher volume share for ... capacity and scale, however, margins in the CRO ... Organisation (CRO) Market ( ), finds ...
Breaking Biology Technology: