TEMPORAL RANGE: 112,000,000 to 72,000,000 Years Ago
Spinosaurus - Majestic, and MONSTROUS!
"Spinosaurus appears to have been poorly adapted to bipedal terrestrial locomotion. The forward position of the center of mass within the ribcage may have enhanced balance during foot-propelled locomotion in water." ~ Nizar Ibrahim, Paleontologist, University of Chicago
Topping out at just over 59ft long (18m), Spinosaurus is one of the largest carnivorous dinosaurs ever discovered. This family of giant theropods also happens to be among the most surprising creatures in the fossil record.
P.S. We know the illustration needs updating! Wait till next week when the definition of Spinosaurus changes yet again! 😅
📸 Interior view of a Spinosaurus tooth fossil - Yes, really!
Nearly everything about Spinosaurus defies traditional thoughts about carnivorous dinosaurs. Spinosaurids are the only known family of semi-aquatic dinosaurs. They also had long, narrow skulls, almost crocodile-like in appearance, and their jaws were lined with conical teeth instead of the curved, blade-like ziphodont teeth of most theropods.
📸 Spinosaurus Vertebra and Neural Spine Closeup (Mini Museum)
Putting the Spine in Spinosaurus
Of course, Spinosaurus also had elongated neural spines forming a massive dorsal sail.
In some species, the spines in the namesake sail measure more than 6ft (2m) in length, providing the framework for an impressive structure that would rise high above the water. The shape and function of this spine sail have been hotly debated topics. Some theories suggest that the sail wasn't a sail at all but a "fatty-hump". However, a detailed reconstruction in 2014 concluded that the spines were too poorly vascularized to support such a structure and the spines were likely covered by skin and used for display. The same study also suggests that its limbs were somewhat shorter than previously thought, and appear to be specifically adapted to paddle-swimming like early whales.
📸 SPINOSAURUS TOOTH DISPLAYED ON A SPINOSAURUS
ADD SPINOSAURUS TO YOUR COLLECTION!
We have a great selection of these incredible fossil Spinosaurus teeth. These are not replicas, but real fossils direct from the Kem Kem beds of Morocco.
📸 EXAMPLE SPINOSAURUS TEETH BY SIZE: LARGE (2.25" TO 3"), MEDIUM (1.75" TO 2.25"), SMALL (1" TO 1.75")
CLASSIC BOXED SPINOSAURUS TOOTH SIZES
As you might expect, Spinosaurus teeth vary in size, width, and color. For convenience we've grouped teeth into similar sizes by length and "visual weight" in order to assign then to categories:
Small - 1" to 1.75" (approximately 2.5cm to 4.5cm)
Medium - 1.75" to 2.25" (approximately 4.5cm to 5.5cm)
Large - 2.25" to 3" (approximately 5.5cm to 7.5cm)
Extra Large - 3" to 5" (approximately 7.5cm to 12.5cm)
Small and Medium Spinosaurus Teeth ship in a glass-topped riker box case measuring 4 1/2" x 3 1/2". The Large Spinosaurus Tooth ships in a 6 1/2" x 5 1/2" glass-topped riker box case. XL Spinosaurus teeth are larger than our display cases and instead ship in a sturdy packing carton. All teeth include a small information card that also serves as the certificate of authenticity. Learn more...
📸 EXTRA LARGE SPINOSAURUS TOOTH IN HAND.
EXTRA LARGE AND SHOWCASE SPECIMENS
In addition to the classic boxed specimens, we also have even larger teeth available. These massive teeth are too large for our standard riker boxes and will ship in sturdy cartons.
Extra large teeth are 3" to 5" (approximately 7.5cm to 12.5cm) and come with a small information card that also serves as the certificate of authenticity. Showcase specimens (larger than 5") are priced and sold individually, and come with individual certificates of authenticity.
Please note: ALL Spinosaurus teeth will show some sign of repair. In addition, to protect the specimen during transit every Spinosaurus tooth is individually wrapped.
On receipt, simply open the top of the case and unwrap the tooth and then arrange the tooth inside the case as pictured here on the site. We also recommend placing the bubble wrap under the soft, white lining of the case. This extra padding will keep the tooth snug in the case after the lid is secured.
Front of the Specimen Card
Note: Illustration may vary as we do change them from time to time.
Back of the Specimen Card
Ibrahim, Nizar, et al. "Semiaquatic Adaptations in a Giant Predatory Dinosaur." Science 345.6204 (2014): 1613-1616.
Smith, Joshua B., et al. "New Information Regarding the Holotype of Spinosaurus Aegyptiacus Stromer, 1915." Journal of Paleontology 80.02 (2006): 400-406.
Stromer, Ernst. "Wirbeltier− Reste der Baharije− Stufe (unterstes Cenoman). 3. Das Original des Theropoden Spinosaurus Aegyptiacus nov. gen. nov. spec." Abhandlungen der Königlichen Bayerischen Akademie der Wissenschaften, Mathematisch− Physikalische Klasse 28 (1915): 1-32.