- Each AgeDetermination can have many AbsoluteAgeDeterminations.

- Each AbsoluteAgeDetermination is associated with exactly one AgeDetermination.

**AgeDetermination <> ChronostraticAgeDetermination**

- Each AgeDetermination can have many ChronostraticAgeDeterminations.

- Each ChronostraticAgeDetermination is associated with exactly one AgeDetermination.

**Author <> AuthorPublTax**

- Each Author is correlated with either Publication or TaxonNameUse by one to many AuthorPublTax associations.

- Each AuthorPublTax association correlates either Publication or TaxonNameUse with exactly one Author.

**AuthorPublTax <> Publication**

- Each AuthorPublTax is correlated with Publication by one to many AuthorPublTax associations.

- Each Publication is correlated with Author by zero or one AuthorPublTax associations.

**Book <> PublisherBook**

- Each Book can have many PublisherBooks.

- Each PublisherBook is associated with exactly one Book.

**ClassificationRank <> TaxonNameUse**

- Each ClassificationRank can be applied to many TaxonNameUses.

- Each TaxonNameUse is associated with zero or one ClassificationRanks.

**CollectingEvent <> AgeDetermination**

- Each CollectingEvent can have many AgeDeterminations.

- Each AgeDetermination is associated with zero or one CollectingEvents.

**CollectingEvent <> Citation**

- Each CollectingEvent can have many Citations.

- Each Citation is associated with zero or one CollectingEvents.

**CollectingEvent <> CollectingEventTeam**

- Each CollectingEvent can have many CollectingEventTeams.

- Each CollectingEventTeam is associated with exactly one CollectingEvent.

**CollectingEvent <> CollectingUnit**

- Each CollectingEvent can have many CollectingUnits.

- Each CollectingUnit has exactly one CollectingEvent.

**CollectingEvent <> StratigraphicUnit**

- Each CollectingEvent occurs in many StratigraphicUnits.

- Each StratigraphicUnit has exactly one CollectingEvent.

**CollectingEventTeam <> CollEventTeamIll**

- Each CollectingEventTeam can have many CollEventTeamIlls.

- Each CollEventTeamIll has exactly one CollectingEventTeam.

**CollectingMethod <> CollUnitMethod**

- Each CollectingMethod can be associated with many CollUnitMethods.

- Each CollUnitMethod is associated with exactly one CollectingMethod.

**CollectingProject <> CollectingEvent**

- Each CollectingProject can sponsor many CollectingEvents.

- Each CollectingEvent is associated with zero or one CollectingProjects.

**CollectingUnit <> Citation**

- Each CollectingUnit can be cited in many Citations.

- Each Citation is associated with zero or one CollectingUnits.

**CollectingUnit <> CollectingUnitPrepMethod**

- Each CollectingUnit is correlated with a PreparationMethod by many CollectingUnitPrepMethod associations.

- Each CollectingUnitPrepMethod association correlates CollectingUnit with exactly one PreparationMethod.

**CollectingUnit <> CollUnitMethod**

- Each CollectingUnit is correlated with CollectingMethod by many CollUnitMethod associations.

- Each CollUnitMethod correlates CollectingUnit with exactly one CollectingMethod.

**CollectingUnit <> Determination**

- Each CollectingUnit can have many Determinations.

- Each Determination is associated with exactly one CollectingUnit.

**CollectingUnit <> Lot**

- Each CollectingUnit can have many Lots.

- Each Lot is associated with zero or one CollectingUnits.

**CollectingUnit <> RepCollUnit**

- Each CollectingUnit can have many RepCollUnits.

- Each RepCollUnit is associated with exactly one CollectingUnit.

**CollectingUnit <> Specimen**

- Each CollectingUnit can have many Specimens.

- Each Specimen is associated with zero or one CollectingUnits.

**CollectingUnit <> Unsortedlot**

- Each CollectingUnit can have many Unsortedlots.

- Each Unsortedlot is associated with zero or one CollectingUnits.

**DeterminationStatus <> Determination**

- Each DeterminationStatus can apply to many Determinations.

- Each Determination is associated with zero or one DeterminationStatus.

**EnvironmentDescription <> CollectingEvent**

- Each EnvironmentDescription can describe many CollectingEvents.

- Each CollectingEvent is associated with zero or one EnvironmentDescriptions.

**Illustration <> CollEventTeamIll**

- Each Illustration can figure many CollEventTeamIlls.

- Each CollEventTeamIll is associated with exactly one Illustration.

**Illustration <> LocalityIllustration**

- Each Illustration can figure many LocalityIllustrations.

- Each LocalityIllustration is associated with exactly one Illustration.

**Illustration <> MorphCharStateIllustration**

- Each Illustration can figure many MorphCharStateIllustrations.

- Each MorphCharStateIllustration is associated with exactly one Illustration.

**Illustration <> MorphologicMsrmtTypeIllustration**

- Each Illustration can figure many MorphologicMsrmtTypeIllustrations.

- Each MorphologicMsrmtTypeIllustration is associated with exactly one Illustration.

**Illustration <> PersonIllustration**

- Each Illustration can figure many PersonIllustrations.

- Each PersonIllustration is associated with exactly one Illustration.

**Illustration <> PublishedIllustration**

- Each Illustration can figure many PublishedIllustrations.

- Each PublishedIllustration is associated with exactly one Illustration.

**Illustration <> SpecimenComponentIllustration**

- Each Illustration can figure many SpecimenComponentIllustrations.

- Each SpecimenComponentIllustration is associated with exactly one Illustration.

**Illustration <> SpecimenIllustration**

- Each Illustration can figure many SpecimenIllustrations.

- Each SpecimenIllustration is associated with exactly one Illustration.

**Illustration <> StratigraphicIllustration**

- Each Illustration can figure many StratigraphicIllustrations.

- Each StratigraphicIllustration is associated with exactly one Illustration.

**Illustration <> TaxonConceptIllustration**

- Each Illustration can figure many TaxonConceptIllustrations.

- Each TaxonConceptIllustration is associated with exactly one Illustration.

**Illustration <> TaxonNameIllustration**

- Each Illustration can figure many TaxonNameIllustrations.

- Each TaxonNameIllustration is associated with exactly one Illustration.

**IllustrationType <> Illustration**

- Each IllustrationType can have many Illustrations.

- Each Illustration is associated with zero or one IllustrationTypes.

**JournalSeries <> JournalArticle**

- Each JournalSeries can have many JournalArticles.

- Each JournalArticle is associated with exactly one JournalSeries.

**JournalSeries <> Monograph**

- Each JournalSeries can have many Monographs.

- Each Monograph is associated with exactly one JournalSeries.

**JournalSeries <> OtherPublication**

- Each JournalSeries can have many OtherPublications.

- Each OtherPublication is associated with exactly one JournalSeries.

**Language <> Publication **

- Each Language can be in many Publications.

- Each Publication is associated with exactly one Language.

**Locality <> LocalityIllustration**

- Each Locality can have many LocalityIllustrations.

- Each LocalityIllustration is associated with exactly one Locality.

**Locality <> LocalitySite**

- Each Locality can have many LocalitySites.

- Each LocalitySite is associated with zero or one Localitys.

**LocalitySite <> Citation**

- Each LocalitySite can have many Citations.

- Each Citation is associated with zero or one LocalitySites.

**LocalitySite <> CollectingEvent**

- Each LocalitySite can occurs in many CollectingEvents.

- Each CollectingEvent is associated with zero or one LocalitySites.

**Monograph <> PublisherMonograph**

- Each Monograph can have many PublisherMonographs.

- Each PublisherMonograph is associated with exactly one Monograph.

**MorphCharState <> MorphCharStateIllustration**

- Each MorphCharState can have many MorphCharStateIllustrations.

- Each MorphCharStateIllustration is associated with exactly one MorphCharState.

**MorphCharState <> TaxonMorphologyUse**

- Each MorphCharState can have many TaxonMorphologyUses.

- Each TaxonMorphologyUse is associated with exactly one MorphCharState.

**MorphologicCharacters <> MorphCharState**

- Each MorphologicCharacters can have many MorphCharStates.

- Each MorphCharState is associated with exactly one MorphologicCharacters.

**MorphologicMsrmtType <> MorphologicMsrmtTypeIllustration**

- Each MorphologicMsrmtType can have many MorphologicMsrmtTypeIllustrations.

- Each MorphologicMsrmtTypeIllustration is associated with exactly one MorphologicMsrmtType.

**MorphologicMsrmtType <> MorphologicSpecimenMsrmt**

- Each MorphologicMsrmtType can have many MorphologicSpecimenMsrmts.

- Each MorphologicSpecimenMsrmt is associated with exactly one MorphologicMsrmtType.

**OtherPublication <> PublisherOtherPublication**

- Each OtherPublication can have many PublisherOtherPublications.

- Each PublisherOtherPublication is associated with exactly one OtherPublication.

**PaleoEnvironment <> EnvironmentDescription**

- Each PaleoEnvironment can have many EnvironmentDescriptions.

- Each EnvironmentDescription is associated with zero or one PaleoEnvironments.

**Person <> Author**

- Each Person can be many Authors.

- Each Author is associated with exactly one Person.

**Person <> CollectingEventTeam**

- Each Person can be a member of many CollectingEventTeams.

- Each CollectingEventTeam is associated with exactly one Person.

**Person <> CollectingUnit**

- Each Person can collect many CollectingUnits.

- Each CollectingUnit is associated with zero or one Persons.

**Person <> Determination**

- Each Person can make many Determinations.

- Each Determination is associated with exactly one Person.

**Person <> PersonIllustration**

- Each Person can have many PersonIllustrations.

- Each PersonIllustration is associated with exactly one Person.

**Person <> RepositoryContact**

- Each Person can be many RepositoryContacts.

- Each RepositoryContact is associated with exactly one Person.

**PreparationMethod <> CollectingUnitPrepMethod**

- Each PreparationMethod can apply to many CollectingUnitPrepMethods.

- Each CollectingUnitPrepMethod is associated with exactly one PreparationMethod.

**PreparationMethod <> SpecCompPrepMethod**

- Each PreparationMethod can apply to many SpecCompPrepMethods.

- Each SpecCompPrepMethod is associated with exactly one PreparationMethod.

**PreparationMethod <> SpecimenPrepMethod**

- Each PreparationMethod can apply to many SpecimenPrepMethods.

- Each SpecimenPrepMethod is associated with exactly one PreparationMethod.

**Publication <> Book**

- Each Publication can be many Books.

- Each Book is associated with exactly one Publication.

**Publication <> Citation**

- Each Publication can contain many Citations.

- Each Citation is associated with exactly one Publication.

**Publication <> ElectronicPublication**

- Each Publication can be zero or one ElectronicPublications.

- Each ElectronicPublication is associated with exactly one Publication.

**Publication <> JournalArticle**

- Each Publication can be many JournalArticles.

- Each JournalArticle is associated with exactly one Publication.

**Publication <> Monograph**

- Each Publication can be many Monographs.

- Each Monograph is associated with exactly one Publication.

**Publication <> OtherPublication**

- Each Publication can be many OtherPublications.

- Each OtherPublication is associated with exactly one Publication.

**Publication <> PartOfPublication**

- Each Publication can be many PartOfPublications.

- Each PartOfPublication is associated with exactly one Publication.

**Publication <> PublicationKeyword**

- Each Publication can have many KeyWords correlated through PublicationKeywords associations.

- Each PublicationKeyword is associated with exactly one Publication.

**KeyWord <> PublicationKeyword **

- Each KeyWord can be used in many PublicationKeywords associations.

- Each PublicationKeyword association correlates a Publication with exactly one KeyWord.

**Publication <> PublishedIllustration**

- Each Publication can have many PublishedIllustrations.

- Each PublishedIllustration is associated with exactly one Publication.

**PublisherUniversity <> PublisherBook**

- Each PublisherUniversity can publish many PublisherBooks.

- Each PublisherBook is associated with exactly one PublisherUniversity.

**PublisherUniversity <> PublisherMonograph**

- Each PublisherUniversity can publish many PublisherMonographs.

- Each PublisherMonograph is associated with exactly one PublisherUniversity.

**PublisherUniversity <> PublisherOtherPublication**

- Each PublisherUniversity can publish many PublisherOtherPublications.

- Each PublisherOtherPublication is associated with exactly one PublisherUniversity.

**Repository <> RepCollUnit**

- Each Repository can have many RepCollUnits.

- Each RepCollUnit is associated with exactly one Repository.

**Repository <> RepositoryContact**

- Each Repository can have many RepositoryContacts.

- Each RepositoryContact is associated with exactly one Repository.

**Specimen <> MorphologicSpecimenMsrmt**

- Each Specimen can have many MorphologicSpecimenMsrmts.

- Each MorphologicSpecimenMsrmt is associated with exactly one Specimen.

**Specimen <> SpecimenComponent**

- Each Specimen can have many SpecimenComponents.

- Each SpecimenComponent is associated with zero or one Specimens.

**Specimen <> SpecimenIllustration**

- Each Specimen can have many SpecimenIllustrations.

- Each SpecimenIllustration is associated with exactly one Specimen.

**Specimen <> SpecimenPrepMethod**

- Each Specimen can have many SpecimenPrepMethods.

- Each SpecimenPrepMethod is associated with exactly one Specimen.

**SpecimenComponent <> SpecCompPrepMethod**

- Each SpecimenComponent can have many SpecCompPrepMethods.

- Each SpecCompPrepMethod is associated with exactly one SpecimenComponent.

**SpecimenComponent <> SpecimenComponentIllustration**

- Each SpecimenComponent can have many SpecimenComponentIllustrations.

- Each SpecimenComponentIllustration is associated with exactly one SpecimenComponent.

**SpecimenTypeStatus <> Specimen**

- Each SpecimenTypeStatus describes many Specimens.

- Each Specimen is associated with exactly one SpecimenTypeStatus.

**StratigraphicUnit <> StratigraphicIllustration**

- Each StratigraphicUnit can have many StratigraphicIllustrations.

- Each StratigraphicIllustration is associated with exactly one StratigraphicUnit.

**TaxonConcept <> TaxonConceptIllustration**

- Each TaxonConcept can have many TaxonConceptIllustrations.

- Each TaxonConceptIllustration is associated with exactly one TaxonConcept.

**TaxonConcept <> TaxonNameUse**

- Each TaxonConcept can have many TaxonNameUses.

- Each TaxonNameUse is associated with exactly one TaxonConcept.

**TaxonConcept <> TaxonRelationship**

- Each TaxonConcept is child of many TaxonRelationships.

- Each TaxonRelationship is associated with exactly one TaxonConcept.

**TaxonConcept <> TaxonRelationship**

- Each TaxonConcept is parent to many TaxonRelationships.

- Each TaxonRelationship is associated with exactly one TaxonConcept.

**TaxonName <> Determination**

- Each TaxonName can be applied in many Determinations.

- Each Determination is associated with exactly one TaxonName.

**TaxonName <> TaxonNameIllustration**

- Each TaxonName can have many TaxonNameIllustrations.

- Each TaxonNameIllustration is associated with exactly one TaxonName.

**TaxonName <> TaxonNameUse**

- Each TaxonName can be applied to many TaxonNameUses.

- Each TaxonNameUse is associated with exactly one TaxonName.

**TaxonNameUse <> AuthorPublTax**

- Each TaxonNameUse has at least one AuthorPublTax.

- Each AuthorPublTax is associated with exactly one TaxonNameUse.

**TaxonNameUse <> Citation**

- Each TaxonNameUse is cited in at least one Citation.

- Each Citation is associated with exactly one TaxonNameUse.

**TaxonNameUse <> TaxonMorphologyUse**

- Each TaxonNameUse can have many TaxonMorphologyUses.

- Each TaxonMorphologyUse is associated with exactly one TaxonNameUse.

**TaxonomicGroup <> TaxonConcept**

- Each TaxonomicGroup can have many TaxonConcepts.

- Each TaxonConcept is associated with zero or one TaxonomicGroups.

**TaxonRelType <> TaxonRelationship**

- Each TaxonRelType can have many TaxonRelationships.

- Each TaxonRelationship is associated with zero or one TaxonRelTypes.