lambei and its name means "large-crested". Other skeleal elements of this species were lost. magnicristatus was named by Sternberg (1935) based on 2 skulls, with most of the articulat skeleton preserved with the type specimen being lost and most of the specimen was bears water damage during storage and discarded in description. magnicristatus, but a 2007 redescription of L. clavinitialis skulls without a spine on the crest are L. clavinitialis is still regarded by most as synonymous, but others suggest separation. lambei is known from at least 17 individuals (7 skulls and postcrania and 10 skulls), L. The other two Procheneosaurus species were found to be juvenile corythosaur. lambei, with Corythosaurus frontalis and Procheneosaurus preceps likely being juveniles. Peter Dodson (1975) examined why so many lambeosaurines are known from such a short interval and area, doing a morphometric study where many skulls were examined, finding many invalid species and genera. Lambeosaurus mount at the Royal Ontario Museum. Ostrom (1964), after a long abscence of any new material description, noted that Marchs USNM 5457, which he named Hadrosaurus paucidens, was likely a specimen of Lambeosaurus. Corythosaurus frontalis was recombined by Parks (based on GSC 5853 now ROM 869) as a specimen of Lambeosaurus. clavinitialis, based on a smaller crest and reduced spine projecting from its back, which has been doubted. magnicristatus in 1937) based on a smaller skull GSC-8705 (now NMC-8705) and L. cranibrevis, named from GSC-870f (now NMC-8705), a partial skeleton and skull, now seen as invalid L. Some species were named based on individual variation, age, sex or taphonomical circumstances. The same paper coined Lambeosaurinae as a replacement for Stephanosaurinae. lambei to house GSC 2869 (now NMC 2869) as the holotype and was after Lambe, who had died 4 years previous. Since remains were scrappy and the skulls were tentatively assigned to them, William Parks (1923) coined L. In the same areas in the 1910s, better remains were found and Lambe assigned 2 new skulls to the former species, coining Stephanosaurus as a new genus to house the species in 1914. In the same volume, Henry Fairfield Osborn termed the latter as a new genus he coined as " Didanodon" without discussion. Lawrence Lambe (1902) named GSC 419, a limb, as Trachodon marginatus and GSC 1092, a left upper jaw, as Trachodon altidens.
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