Romer's gap

(noun)

A period in the tetrapod fossil record (360 to 345 million years ago) from which excavators have not yet found relevant fossils.

Related Terms

Examples of Romer's gap in the following topics:

  • Gaps in the Fossil Record

    • Romer's gap is an example of an apparent gap in the tetrapod fossil record used in the study of evolutionary biology.
    • These gaps represent periods from which no relevant fossils have been found.
    • Romer's gap is named after paleontologist Alfred Romer, who first recognized it.
    • Romer's gap spanned from approximately 360 to 345 million years ago, corresponding to the first 15 million years of the Carboniferous Period.
    • The bank of the Whiteadder Water in Scotland is one of the few known localities bearing fossils of tetrapods from Romer's gap.

  • Gap Junctions

    • Gap junctions are also called communicating junctions, macula communicans, or nexuses. 
    • The number of gap junctions shared between two cells can vary as well.
    • The channels in a gap junction aren’t always open. 
    • Gap junctions are found in many places throughout the body. 
    • Gap junctions are responsible for electrochemical and metabolic coupling.

  • Learning the Gender Gap

    • This implies that the gender gap stems from social, rather than biological, origins.
    • In order to determine whether the gender gap is a result of implicit or explicit discrimination, we can look at the adjusted and unadjusted wage gap.
    • The remaining part of the raw wage gap that cannot be explained by variables that are thought to influence pay is then referred to as the adjusted gender pay gap and may be explicitly discriminatory.
    • The total wage gap in the United States is 20.4 percent.
    • This PSA by the European Union illustrates the gender pay gap in Europe.

  • The Gap Model

    • The Service Quality Model, also known as the GAP Model, was developed in 1985.
    • Gap between consumer expectation and management perception: This gap arises when the management or service provider does not correctly perceive what the customer wants or needs.
    • Gap between service quality specification and service delivery: This gap may arise in situations pertaining to the service personnel.
    • Gap between expected service and experienced service: This gap arises when the consumer misinterprets the service quality.
    • The diagram shows the different gaps in the model, including the Knowledge Gap discussed here.

  • The RATER Model

    • Gap 1: The management perception gap, or the difference between the service customers expect and management's perception of customer expectations.
    • Gap 2: The quality specification gap.
    • Gap 3: The service delivery gap.
    • Gap 4: The market communication gap.
    • Gap 5: The perceived service quality gap.

  • The Speed of Light

    • The first quantitative estimate of the speed of light was made in 1676 by Rømer.

  • Family and Gender Issues

    • Social expectations that women manage childcare contribute to the gender pay gap and other limitations in professional life for women.
    • In the United States, there is an observable gender pay gap, such that women are compensated at lower rates for equal work as men.
    • The gender pay gap is measured as the ratio of female to male median yearly earnings among full-time, year-round (FTYR) workers.
    • Economists who have investigated the gender pay gap have also noted that women are more likely to choose jobs based on factors other than pay.
    • Recall at least three reasons why there might be a gender pay gap

  • Banking and Finance Reform

    • (1992), Christina Romer argued that this policy raised industrial production by 25% until 1937 and by 50% until 1942.

  • Closing the Feedback Loop

    • Ramaprasad (1983) defines feedback generally as "information about the gap between the actual level and the reference level of a system parameter which is used to alter the gap in some way," emphasising that the information by itself is not feedback unless translated into action. "...'
    • Feedback mechanism: The action or means used to subsequently modify the gap.
    • Feedback loop: The complete causal path that leads from the initial detection of the gap to the subsequent modification of the gap.

  • Tilting the Tests: Discrimination by IQ

    • Yet these IQ gaps are only observed in average scores and say very little about individuals.
    • Thus, the implications of the IQ gaps are unclear.
    • And while the existence of racial IQ gaps is well-documented, researchers have not reached a consensus as to their cause.
    • But research suggests that differences in socioeconomic status cannot entirely explain the IQ gap.
    • Discuss the various explanations for the IQ gap, ranging from genetic to environmental factors