Working with Hall provided a strong background in systematic paleontology and allowed Beecher to further improve his fossil preparation and photography skills.

[2] In 1891 he was Instructor for Paleontology at Sheffield Scientific School (SSS) and took the geology course for James Dwight Dana, who was ill.[3] Beecher was awarded his doctorate for his study on Brachiospongidae (enigmatic Silurian sponges) in 1891.

[5] Exceptional preservation (by pyrite) of soft body parts at Beecher's Trilobite Bed is geologically rare and was later recognized as a highly significant paleontological site, a Konservat-Lagerstätten.

[1] Beecher's bachelor days at New Haven (where he roomed in "the attic," the top story of the SSS with Louis Valentine Pirsson, Samuel Lewis Penfield & Horace Lemuel Wells) came to an end on September 12, 1894, when he married Miss Mary Salome Galligan.

[1] Beecher was a leading[1] proponent of Neo-Lamarckism (epitomized by Edward Drinker Cope and Alpheus Hyatt) and also argued for orthogenesis and racial senescence.

Beecher's reputation as an investigator will rest chiefly on the rich results he obtained in the critical, painstaking application of these fruitful principles that Professor Hyatt labored so long to establish.

[8] The first one he chose was YPM VP 2182,[9] a well-complete and articulate hadrosaur dinosaur identified then as "Claosaurus" annectans but now understood to be Edmontosaurus.

[1] Beecher's bibliography includes some 100+ scientific papers, often brief, describing 7 new orders, 1 new family, 2 new subfamilies, 7 new genera, and 20 new species.

[1] A comprehensive re-examination of exceptionally preserved trilobites published in 1920 was dedicated to Beecher; his contribution was still significant nearly 20 years after his death.