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Concretion in Sandstone
Rippled Sandstone / Mudcracks
Rugose coral #2
Teeth
Fish Tooth
Burrowed sandstone
Therium #2
Brontotherid 3
Menardii
Crambin Protein
Pelton turbine bucket
Hierarchical Locking Experiment I
Mushroom Coral (Scleractinia: Fungiidae)
Tabulate Coral
Spiriferid brachiopod
Simple Rocket
SH3 Domain
SH2 Domain
DNA Strand
Ferredoxin
Spasmolytic Peptide
Preassembled Gears keychain
Vesicular Basalt
Brachiopod
Spiny Snail
Spiny Snail
Sole marks, lithic sandstone
Sand Shark Jaw
Lepidodendron
Dawsonoceras (Cephalopod)
Rough Coral
Carbon, Oxygen, Hydrogen with loops and pegs
PDMS (flexible) slide Mold
Oscilloscope Watch Enclosure HW1.4
Interlocking Cube
Clock Manipulative
Triangle Based Pattern Blocks
cylinder
Algebra Tiles
