Dinosaur - Fossil teeth (No reserve price)

Set of 3 exceptionally well-preserved dinosaur teeth.

Spinosaurus tooth
Origin: Kem Kem Beds, Morocco
Period: Cretaceous, 112 to 72 million years ago
Context: Spinosaurus (“spine lizard”) is a genus of spinosaurid dinosaur that lived in North Africa from the Cenomanian to the end of the Cretaceous. The first complete fossil profile of Spinosaurus was discovered in 1912 by the German paleontologist Ernst Stromer. Unfortunately, these remains were destroyed during World War II in the Allied bombing of Dresden. Recent estimates suggest the creature measured 14 meters long and weighed 8.2 tonnes, making Spinosaurus one of the largest terrestrial carnivores that ever existed. Most modern researchers support the view that Spinosaurus was a semi-aquatic dinosaur that fed on both terrestrial and aquatic animals. Several physiological features of its skeleton support this theory, such as its high-density bones that allowed control of buoyancy and its paddle-shaped tail, used for underwater propulsion. Its habitat consisted of swamps and plains
Marshy areas are one of the main reasons
why Spinosaurus teeth are among the
most common dinosaur fossils on the amateur collectors’ market. It is well
known to paleontologists that muddy areas
preserve fossils better, because the mud creates a
mold when the dinosaur bones sink into it.

Sauropod tooth
Origin: Kem Kem Beds, Morocco
Period: Cretaceous, 105 million years ago
Context: Nigersaurus was a unique genus of sauropod dinosaur that lived about 115 to
105 million years ago, at the beginning of the Cretaceous period. It was first discovered in the Gadoufaoua region of Niger, in West Africa, in the 1990s, by a team led by paleontologist Paul Sereno. Nigersaurus was a relatively small sauropod, about 9 meters long, with a long neck and a short, wide skull. One of the most distinctive features of Nigersaurus was the peculiar anatomy of its skull. Unlike many other sauropods, Nigersaurus had a large, squared skull, equipped with rows of more than 500 fine, pencil-shaped teeth arranged in a unique pattern. These teeth continually renewed throughout the dinosaur's life, indicating that Nigersaurus was a heavy feeder, probably consuming large amounts of vegetation. Paleontologists believe that Nigersaurus fed close to the ground, consuming ferns, horsetails, and other low-lying plants. Its teeth and jaw were specialized for effectively cutting vegetation at ground level, making it a herbivore well suited to this lifestyle. Furthermore, the shape of its skull suggests that Nigersaurus had a relatively light head, which would have helped minimize energy expenditure while foraging for food.

Pterosaur tooth
Origin: Kem Kem Beds, Morocco
Period: Cretaceous, 112 to 72 million years ago
Context: Pterosaurs were a group of flying reptiles that lived during the Mesozoic Era, alongside the dinosaurs, about 228 to 66 million years ago. Often confused with dinosaurs, they actually belonged to a distinct group within the broader class of reptiles. Pterosaurs were the first vertebrates to develop powered flight, long before birds or bats. They had lightweight, hollow bones, as well as a wing structure supported mainly by an elongated fourth finger, with a skin membrane extending between this finger and their body. Pterosaurs displayed great diversity in size, shape, and lifestyle. Some, like Pterodactylus, were relatively small with a wingspan of about one meter, while others, such as Quetzalcoatlus, had wingspans exceeding 10 meters, making them the largest flying animals known. Their diet also varied: some species fed on fish, others were scavengers, and some may have eaten small land animals or insects. Many pterosaurs possessed crests on their heads, probably used for display, species recognition, or aerodynamic reasons. Their fossil record is relatively limited, aside from their teeth, due to the fragility of their light bones which do not fossilize well. However, the rare discoveries have revealed a mine of information about their anatomy, their flight mechanics, and their behavior. Despite their aerial dominance for millions of years, pterosaurs disappeared at the end of the Cretaceous, probably due to the same
mass extinction event that wiped out the
dinosaurs.

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