Science Olympiad Fossil Event 2025

Kingdom Protozoa

Single-celled organisms, often motile.

Forams

Phylum Foraminifera, marine protists with shells.

Fusulinids

Order Fusulinida, extinct foraminiferal group.

Triticites

Genus of fusulinids, known from fossil records.

Rotaliida

Order of foraminifera with coiled shells.

Nummulites

Genus of large, flat foraminifera.

Kingdom Animalia

Multicellular organisms, primarily heterotrophic.

Sponges

Phylum Porifera, simple aquatic animals.

Astraeospongia

Genus of calcareous sponges.

Hydnoceras

Genus of glass sponges.

Bryozoans

Phylum Bryozoa, colonial aquatic invertebrates.

Archimedes

Genus of bryozoans with spiral growth.

Rhombopora

Genus of bryozoans, known for fenestrate forms.

Graptolites

Phylum Hemichordata, marine colonial organisms.

Dendroidea

Order of benthic graptolites.

Graptoloidea

Order of planktic graptolites.

Corals

Phylum Cnidaria, marine animals with calcium carbonate skeletons.

Tabulata

Order of tabulate corals, colonial forms.

Favosites

Genus of tabulate corals.

Halysites

Genus of corals with chain-like structures.

Rugosa

Order of rugose corals, solitary or colonial.

Heliophyllum

Genus of horn corals.

Hexagonaria

Genus of rugose corals with hexagonal patterns.

Scleractinia

Order of stony corals, modern reef builders.

Septastrea

Genus of stony corals.

Arthropods

Phylum Arthropoda, invertebrates with jointed limbs.

Radiodonta

Order of extinct predatory arthropods.

Anomalocaris

Genus of large Cambrian arthropods.

Crustacea

Subphylum including crabs, lobsters, and shrimp.

Chelicerata

Subphylum including arachnids and horseshoe crabs.

Eurypterida

Order of ancient aquatic arthropods.

Eurypterus

Genus of eurypterids, known as sea scorpions.

Insecta

Class of arthropods, includes all insects.

Trilobita

Class of extinct marine arthropods.

Polymerida

Order of trilobites with many segments.

Cryptolithus

Genus of trilobites with distinctive morphology.

Calymene

Genus of trilobites, known for well-preserved fossils.

Elrathia

Genus of trilobites, common in fossil records.

Isotelus

Genus of large trilobites.

Eldredgeops

Genus of trilobites, formerly Phacops.

Agnatha

Superclass of jawless fish.

Ostracoderms

Extinct jawless fish with bony armor.

Placodermi

Class of armored jawed fish.

Bothriolepis

Genus of placoderm fish.

Dunkleosteus

Genus of large placoderm fish.

Chondrichthyes

Class of cartilaginous fish.

Selachimorpha

Superorder including sharks.

Otodus

Genus of prehistoric sharks.

O. megalodon

Species of giant extinct shark.

Batoidea

Superorder including rays.

Osteichthyes

Superclass of bony fish.

Actinopterygii

Class of ray-finned fish.

Knightia

Genus of extinct fish.

Xiphactinus

Genus of large predatory fish.

Sarcopterygii

Class of lobe-finned fish.

Eusthenopteron

Genus of ancient lobe-finned fish.

Latimeria

Genus of coelacanth, a living fossil.

Tiktaalik

Genus of transitional fish-tetrapod.

Amphibia

Class of amphibians.

Acanthostega

Genus of early tetrapods.

Eryops

Genus of early amphibians.

Diplocaulus

Genus of extinct amphibians.

Reptilia

Class of reptiles.

Crocodilia

Order including modern crocodiles.

Testudines

Order of turtles.

Ichthyosauria

Order of marine reptiles.

Squamata

Order of lizards and snakes.

Mosasauridae

Family of large marine reptiles.

Plesiosauria

Order of long-necked marine reptiles.

Pterosauria

Order of flying reptiles.

Dinosauria

Clade of dinosaurs.

Saurischia

Order of lizard-hipped dinosaurs.

Theropoda

Suborder of bipedal carnivorous dinosaurs.

Allosaurus

Genus of large theropod dinosaurs.

Coelophysis

Genus of small theropod dinosaurs.

Dilophosaurus

Genus of early theropod dinosaurs.

Deinonychus

Genus of small, agile theropod dinosaurs.

Spinosaurus

Genus of large theropod with sail.

Tyrannosaurus

Genus of large carnivorous dinosaurs.

Velociraptor

Genus of small, feathered theropod dinosaurs.

Sauropodomorpha

Suborder of long-necked herbivorous dinosaurs.

Brachiosaurus

Genus of large sauropod dinosaurs. Suborder Sauropodomorpha

Diplodocus

Genus of long-necked sauropod dinosaurs. Suborder Sauropodomorpha

Patagotitan

Genus of giant sauropod dinosaurs. Suborder Sauropodomorpha

Plateosaurus

Genus of early herbivorous dinosaurs. Suborder Sauropodomorpha

Ornithischia

Order of bird-hipped dinosaurs. includes Angolasauria, Ceratopsia, Ornithopoda, Pachycephalosauria, Stegosauria, Aves (birds)

Ankylosauria

Infraorder of armored dinosaurs.

Ankylosaurus

Genus of heavily armored dinosaurs.

Ceratopsia

Infraorder of horned dinosaurs. Includes Triceratops and Protoceratops*

Triceratops

Genus of large horned dinosaurs.

Protoceratops

Genus of small ceratopsian dinosaurs.

Ornithopoda

Infraorder of bipedal herbivorous dinosaurs.

Iguanodon

Genus of early herbivorous dinosaurs.

Parasaurolophus

Genus of hadrosaurid dinosaurs.

Maiasaura

Genus of nesting dinosaurs.

Pachycephalosauria

Infraorder of dome-headed dinosaurs.

Pachycephalosaurus

Genus of thick-skulled dinosaurs.

Stegosauria

Infraorder of plated dinosaurs.

Stegosaurus

Genus of plated herbivorous dinosaurs.

Class Aves

Class of feathered vertebrates, birds.