411 REFERENCE · Wiktionary
Signor-Lipps effect
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Named after American paleontologists Philip Signor and Jere Lipps, who formally proposed it in 1982.
Noun
en noun Signor-Lipps effect
en paleontology The principle that due to the incompleteness of the fossil record, the earliest and latest known occurrences of a taxon will almost never represent the ages of the actual earliest and latest organisms belonging to it.
en eponyms