most species came directly from pre-existing species. This is called anagenesis: species by changing, or 'phyletic evolution'. For much of the 20th century...

Eric M.; Moore, Jason R. (2017). "A new tyrannosaur with evidence for anagenesis and crocodile-like facial sensory system". Scientific Reports. 7 44942...

"Was Australopithecus anamensis ancestral to A. afarensis? A case of anagenesis in the hominin fossil record". Journal of Human Evolution. 51 (2): 134–152...

most species arose directly from pre-existing species. This is called anagenesis: new species by older species changing. Now we think most species arise...