echinoid การใช้

• They form the newest branch on the echinoid tree.
• Fossils which may be seen in the limestone scree are bivalve, brachipod and echinoid.
• Although the rate of movement was slow, it was sufficiently fast to outpace the echinoid.
• The Catalan Bay Shale Formation contains unidentifiable echinoid spines and belemnite fragments and infrequent Early Jurassic ( Middle Lias ) ammonites.
• The fossils found in the Gibraltar Limestone include various brachiopods, corals, echinoid fragments, gastropods, pelecypods, and stromatolites.
• The sparse fossils found in this sequence include the brachiopod " Terebratulina " and the echinoid " Conulus ".
• The Talpina animal bored into calcareous algae, corals, echinoid tests ( shells ), mollusc shells and the rostra of belemnites.
• While there, she decides to carry as a talisman the shepherd's crown, or fossilised Echinoid, that had been in the Aching family for many generations.
• Permian-aged strata rich in fossil brachiopods, echinoid spines, and gastropods are the only Paleozoic rocks exposed in the Chiricahua Mountains, and reflect a shallow-marine coral reef environment.
• "Who's to say that volunteering isn't fun ? " asks Trudy Defoyd, whose 4-year-old son Devon is finding gryphea ( oyster ), pelecypod ( clam ) and echinoid ( sea urchin ) fossils like the other kids.