External Fundamental System EFS Maturity Flag
Screen supplied inner-to-outer band widths/vascularity for a caller EFS-like outer run; independently assessed histology and taxonomic context remain necessary, not a maturity diagnosis.
Description
An external fundamental system is assessed histologically.
An external fundamental system is assessed histologically. A run of narrow, low-vascularity outer bands is only an EFS-like morphology criterion.
Screen supplied inner-to-outer band widths/vascularity for a caller EFS-like outer run; independently assessed histology and taxonomic context remain necessary, not a maturity diagnosis.
When to use External Fundamental System EFS Maturity Flag
Use this tool to screen supplied inner-to-outer band widths/vascularity for a caller EFS-like outer run; independently assessed histology and taxonomic context remain necessary, not a maturity diagnosis.
Prepare the fossil measurements or occurrence records and the chosen calibration parameters. Retain the stated coordinate, age and measurement conventions.
How to use External Fundamental System EFS Maturity Flag and understand its results
- Prepare the fossil measurements or occurrence records and the chosen calibration parameters. Retain the stated coordinate, age and measurement conventions.
- Enter outerBandWidthsMicrometers, outerBandVascularPorosities, callerMaximumBandWidthMicrometers, callerMaximumOuterPorosity, callerMinimumQualifyingConsecutiveBands using the field table and calculation rules, then run the tool.
- Read qualifyingOuterBandFlags, outermostQualifyingBandRun, callerEfsMorphologyCriterionObserved. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| outerBandWidthsMicrometers | Outer band widths micrometers | list of number | Required |
| outerBandVascularPorosities | Outer band vascular porosities | list of number | Required |
| callerMaximumBandWidthMicrometers | Caller maximum band width micrometers | number | Required |
| callerMaximumOuterPorosity | Caller maximum outer porosity | number | Required |
| callerMinimumQualifyingConsecutiveBands | Caller minimum qualifying consecutive bands | integer | Required |
Align inner-to-outer nonnegative widths and porosities in [0,1]. Use nonnegative maximum width, fraction maximum porosity and positive integer minimum run. Count only the qualifying outermost suffix and compare inclusively.1
Paired lists must be nonempty and have equal lengths.
qualifying = width ≤ maximum AND porosity ≤ maximum; run = qualifying suffix length Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| qualifyingOuterBandFlags | Qualifying outer band flags | list of number |
| outermostQualifyingBandRun | Outermost qualifying band run | number |
| callerEfsMorphologyCriterionObserved | Caller efs morphology criterion observed | boolean |
{
"input": {
"outerBandWidthsMicrometers": [
5,
4,
3
],
"outerBandVascularPorosities": [
0.01,
0.02,
0.01
],
"callerMaximumBandWidthMicrometers": 5,
"callerMaximumOuterPorosity": 0.02,
"callerMinimumQualifyingConsecutiveBands": 3
},
"output": {
"qualifyingOuterBandFlags": [
1,
1,
1
],
"outermostQualifyingBandRun": 3,
"callerEfsMorphologyCriterionObserved": true
}
}Limitations and assumptions
Taxonomic and histological context remain necessary; the flag is not a maturity diagnosis.
Numbers and computed results must be finite; overflow produces an error. Numeric lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.
Alternative or Complementary methods
Use Growth Ring Lines of Arrested Growth Counter: Combine observed LAG counts with explicit resorption/double-band assumptions, taking the largest section-based minimum annual-age scenario; annual periodicity is an assumption, not automatically established skeletal age. For a complementary task, use Tooth Crown Height Wear Stage Rater: Screen measured relative tooth crown loss against caller wear bands on comparable unworn reference crowns; no embedded species ages, reconstructed wear history or diet diagnosis.
References
Similar or alternative tools
- Growth Ring Lines of Arrested Growth Counter
Combine observed LAG counts with explicit resorption/double-band assumptions, taking the largest section-based minimum annual-age scenario; annual periodicity is an assumption, not automatically established skeletal age.
- Tooth Crown Height Wear Stage Rater
Screen measured relative tooth crown loss against caller wear bands on comparable unworn reference crowns; no embedded species ages, reconstructed wear history or diet diagnosis.