e81f31a2-2caf-4621-862a-b105d6044fd8 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-23T07:44:46 creation ISO 19115 2016 Natural growth lines in sea urchin (Heliocidaris erythrogramma) ossicles e81f31a2-2caf-4621-862a-b105d6044fd8 Sea urchin tagged using tetracycline display visible marks in jaw elements and test plates that can be used to determine growth and subsequently an individuals age. Natural growth lines in the same structures can be used to determine age if natural lines are deposited at a consistent rates independent of age. Sea urchins were tagged using tetracycline and age determined from both fitted growth models and the number of bands deposited. Rates of natural line deposition were also quantified. {"type": "Polygon", "coordinates": [[[147.9, -42.7], [148.1, -42.7], [148.1, -42.5], [147.9, -42.5], [147.9, -42.7]]]} 147.9 148.1 -42.7 -42.5 25 247001 Age Growth Heliocidaris erythrogramma Number of growth lines in urchin test plate Oceans | Marine Biology | Marine Invertebrates Test diameter ORCID ID documentDigital HTML ORCID ID documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital License Graphic PNG Unnamed resource documentDigital HTML