The Signor–Lipps effect is a paleontological principle proposed in 1982 by Philip W. Signor and Jere H. Lipps which states that, since the fossil record...

name it may refer to: Tari Signor (born 1967), American actress Philip W. Signor, a paleontologist known for Signor–Lipps effect In the following instances...

incompleteness of the fossil record. This phenomenon, later called the Signor-Lipps effect, notes that a species' true extinction must occur after its last...

Signor–Lipps effect (extinction) (fossils) (paleontology) Silk screen effect (technology) Silo effect (management) (systems theory) Simon effect (psychology)...

The exact length of time is difficult to determine because of the Signor–Lipps effect, where the fossil record is so incomplete that most extinct species...

sites (with link directory) Lists of extinct animals Living fossil Signor–Lipps effect Transitional fossil Zombie taxon Ryan, Gerard; Baker, Christopher...

estimating a latest possible extinction date (taking into account the Signor-Lipps effect) of around 12,000-11,000 years ago. Cretan dwarf hippopotamus Maltese...

available from times nearer the crucial event, a difficulty known as the Signor–Lipps effect. The Hell Creek Formation is a well-known and much-studied fossil-bearing...

after they are found in the fossil record – this is known as the Signor–Lipps effect. Trace fossils consist mainly of tracks and burrows, but also include...

estimating a latest possible extinction date (taking into account the Signor-Lipps effect) of around 10,300-9,100 years ago. Bate, D. M. A.: "Preliminary Note...

33–35% of marine genera when corrected for background extinction, the Signor–Lipps effect and clustering of extinctions in certain taxa. The loss of marine...

intent to name the crater Chicxulub. Keith Meldahl verified the Signor–Lipps effect experimentally by taking core samples of mud at a modern tidal flat...

before they are found in the fossil record – this is known as the Signor–Lipps effect. In 2019, a "stunning" find of lagerstätten, known as the Qingjiang...

particularly with respect to the evolution and extinction of organisms (the Signor–Lipps effect), this is rarely quantified when considering geochemical records...

and lifespan of fossil organisms Shark tooth – Teeth of a shark Signor–Lipps effect – Sampling bias in the fossil record raising difficulties to characterize...

designed to counter biases in biodiversity estimates, such as the Signor–Lipps effect and Pull of the Recent. They found a significantly higher extinction...

Galápagos Islands and sites in California. Lipps is co-author (with Philip W. Signor) of the Signor–Lipps effect, a paleontological principle which states...

much more recently somewhere other than the Cradle of Humankind (Signor–Lipps effect). African archaeology Australopithecus africanus – Extinct hominid...

that species in time. Moreover, ranges can be influenced by the Signor-Lipps effect, meaning that the last "disappearance" of a species tends to be observed...

known fossils — paleontologists call this kind of uncertainty the Signor–Lipps effect. Nearly all members of the genera Halkieria are known only from finds...

Apparent pterosaur decline would have been an illusion caused by the Signor–Lipps effect, groups seeming to disappear earlier than a mass extinction because...

could be a result of the poor fossil records for pterosaurs (the Signor-Lipps Effect). Since they found multiple lineages (Pteranodontidae, Nyctosauridae...

(1992). "Vendian faunas and the early evolution of Metazoa". In Lipps, J.H.; Signor, P.W. (eds.). Origin and early evolution of the Metazoa. Plenum....

"Functional and ecological aspects of Ediacarian assemblages". In Lipps, J.; Signor, P.W. (eds.). Origin and early evolution of the Metazoa. New York...