Lambert Beverly Halstead (13 June 1933 – 30 April 1991), who also went byLambert Beverly Halstead Tarlo or justBeverly Halstead, was a Britishpaleontologist and professor ofGeology &Zoology andpopularizer of science. He was noted for his candid theories of dinosaur sexual habits, research intoplesiosaurs, and also for a prolonged assault onphylogenetic systematics (or"cladism", as he referred to it), in a series of letters and editorials to the journalNature in the late 1970s and early 1980s.

He was President of theGeologists' Association for 1990–91.^[1] He also was a co-host on theITV seriesThe Dinosaur Trail.

• Sarjeant, William A. S. "Lambert Beverly Halstead (1933-1992): his life, his discoveries and his controversies".Modern Geology.18 (Halstead Memorial Volume, 1):5–59. Republished in W.A.S. Sarjeant (ed.), Vertebrate fossils and the evolution of scientific concepts. Writings in tribute to Beverly Halstead. Reading, England: Gordon & Breach Publishers, 1995.
• Sarjeant, William A. S. "Halstead [Tarlo], (Lambert) Beverly (1933–1991), palaeontologist".Oxford Dictionary of National Biography (online ed.). Oxford University Press.doi:10.1093/ref:odnb/49762. (Subscription orUK public library membership required.)

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