GizzardThe gizzard, also referred to as the ventriculus, gastric mill, and gigerium, is an organ found in the digestive tract of some animals, including archosaurs (birds and other dinosaurs, crocodiles, alligators, pterosaurs), earthworms, some gastropods, some fish, and some crustaceans. This specialized stomach constructed of thick muscular walls is used for grinding up food, often aided by particles of stone or grit.
CrocodileFamily of large reptilian carnivoresA crocodile (familyCrocodylidae) or true crocodile is a large, semiaquaticreptile that lives throughout the tropics in Africa, Asia, the Americas and Australia.LithophagyLithophagy is an ingestion of stones. The term comes from Greek roots λίθος + φᾰγω. The term was suggested in 1922 by Pyotr Dravert. In Russian literature the term may also refer to geophagia.
JurassicSecond period of the Mesozoic EraSubdivision of the Jurassic according to the ICS, as of 2024.Vertical axis scale: Millions of years agoEtymologyName formalityFormalUsage informationRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitPeriodStratigraphic unitSystemTime span formalityFormalLower boundary definitionFirst appearance of the ammonitePsiloceras spelae tirolicum.Lower boundary GSSPKuhjoch section, Karwendel mountains, Northern Calcareous Alps, Austria47°29′02″N11°31′50″E / 47.4839°N 11.5306°E / 47.4839; 11.5306Lower GSSP ratified2010Upper boundary definitionNot formally definedUpper boundary definition candidatesMagnetic—base of Chron M18rBase of Calpionellid zone BFAD of ammoniteBerriasella jacobiUpper boundary GSSP candidate section(s)NoneThe Jurassic ( ) is a geologic period and stratigraphic system that lasted about 58.3 million years, spanning from the end of the Triassic Period 201.4 Ma (million years ago) to the beginning of the Cretaceous Period, 143.1 Ma.
Cobble (geology)A cobble (also sometimes called a cobblestone) is a clast of rock defined on the Udden–Wentworth scale as having a particle size of 64–256 millimeters (2.5–10.1 in), larger than a pebble and smaller than a boulder. Other scales define a cobble's size differently. A rock made predominantly of cobbles is termed a conglomerate. Cobblestone is a building material based on cobbles.
Rock (geology)In geology, a rock (also called a stone) is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition, and the way in which it is formed. Rocks form the Earth's outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere.
Gastrointestinal tractThe gastrointestinal tract (also called the GI tract, digestive tract, gut and the alimentary canal) is the tract or passageway of the digestive system that leads from the mouth to the anus. The tract is one of the largest of the body's systems. The GI tract contains all the major organs of the digestive system, in humans and other animals, including the esophagus, stomach, and intestines.
SandSand is a granular material composed of finely divided mineral particles. Sand has various compositions but is usually defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass.
Grain sizeGrain size (or particle size) is the diameter of individual grains of sediment, or the lithified particles in clastic rocks. The term may also be applied to other granular materials. This is different from the crystallite size, which refers to the size of a single crystal inside a particle or grain. A single grain can be composed of several crystals. Granular material can range from very small colloidal particles, through clay, silt, sand, gravel, and cobbles, to boulders.
BallastBallast is dense material used as a weight to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability. A compartment within a boat, ship, submarine, or other floating structure that holds water is called a ballast tank. Water can be moved in and out from the ballast tank to balance the ship.
SauropodaSauropoda (), whose members are called sauropods (; from sauro- + -pod; lit. 'lizard-footed'), is a clade of saurischian ('lizard-hipped') dinosaurs. Sauropods had very long necks, long tails, small heads (relative to the rest of their body), and four thick, pillar-like legs. They are notable for the enormous sizes attained by some species, and the group includes the largest animals to have ever lived on land.
ToothA tooth (pl.: teeth) is a hard, calcified structure found in the jaws (or mouths) of many vertebrates and are used to break down food. Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or wounding prey, tearing food, for defensive purposes, to intimidate other animals often including their own, or to carry prey or their young. The roots of teeth are covered by gums.*As an Amazon Associate I earn from qualifying purchases.