A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

From Khouribga, Morocco   Otodus is an extinct mackerel shark which lived during the Paleocene and Eocene epochs, approximately 60 to 45 million years ago. This shark is known from the fossil teeth and fossilized vertebral centra. Like other elasmobranchs, the skeleton of Otodus was composed of cartilage and not...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

Fulgurites (from the Latin fulgur, meaning "lightning") are natural tubes, clumps, or masses of sintered, vitrified, and/or fused soil, sand, rock, organic debris and other sediments that can form when lightning discharges into ground. They are classified as a variety of the mineraloid lechatelierite, although their absolute chemical composition is...

Phosphate Deposits - Khouribga, Morocco LATE CRETACEOUS PERIOD:  73 - 65 million years agoMosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known...

Phosphate Deposits - Khouribga, MoroccoLATE CRETACEOUS PERIOD:  73 - 65 million years agoMosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known as...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

Phosphate Deposits - Khouribga, Morocco LATE CRETACEOUS PERIOD:  73 - 65 million years agoMosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known...

Phosphate Deposits - Khouribga, Morocco LATE CRETACEOUS PERIOD:  73 - 65 million years agoMosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known...

Phosphate Deposits - Khouribga, Morocco LATE CRETACEOUS PERIOD:  73 - 65 million years agoMosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known...

Phosphate Deposits - Khouribga, Morocco LATE CRETACEOUS PERIOD:  73 - 65 million years agoMosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known...

Phosphate Deposits - Khouribga, Morocco LATE CRETACEOUS PERIOD:  73 - 65 million years agoMosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known...

Phosphate Deposits - Khouribga, Morocco LATE CRETACEOUS PERIOD:  73 - 65 million years agoMosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known...

Spinosaurus (meaning "spine lizard") is a genus of theropod dinosaur that lived in what now is North Africa, during the upper Albian to upper Turonian stages of the Cretaceous period, about 112 to 93.5 million years ago. This genus was known first from Egyptian remains discovered in 1912 and described...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

Genuine Spinosaurus (Dinosaur) tooth in a glass display box. This specimen comes in a labeled display box with color image and a brief written description. These make amazing gifts as they come perfectly displayed and labeled. Spinosaurus (meaning "spine lizard") is a genus of theropod dinosaur that lived in what now...

Genuine Triceratops tooth from the Hell Creek Formation in Montana. This specimen comes in a labeled display box with color image and a brief written description. These make amazing gifts as they come perfectly displayed and labeled. Triceratops is a genus of herbivorous ceratopsid dinosaur that first appeared during the...

Genuine Knightia Fossil Fish in a Glass Display Box. This specimen comes in a labeled display box with color image and a brief written description. These make amazing gifts as they come perfectly displayed and labeled. Here's a 50 million year old fossil herring from the Green River Formation of Wyoming....