This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Schreger line" – news · newspapers · books · scholar · JSTOR(September 2014) (Learn how and when to remove this message)
Schreger lines in a mammoth ivory
Schreger lines are visual artifacts that are evident in the cross-sections of ivory.[1] They are commonly referred to as cross-hatchings, engine turnings, or stacked chevrons. Schreger lines can be divided into two categories. The easily seen lines which are closest to the cementum are the outer Schreger lines. The faintly discernible lines found around the tusk nerve or pulp cavities are the inner Schreger lines. The intersections of Schreger lines form angles, which appear in two forms: concave angles and convex angles. Concave angles have slightly concave sides and open to the medial (inner) area of the tusk. Convex angles have somewhat convex sides and open to the lateral (outer) area of the tusk. Outer Schreger angles, both concave and convex, are acute in extinct proboscidea and obtuse in extant proboscidea.[2]
^Espinoza, Edgard O'Neil; Mann, Mary-Jacque (1991). The identification guide for ivory and ivory substitutes. p. 10.
^U.S. Fish & Wildlife Services | Forensics Laboratory Dead Link
Schreger lines are visual artifacts that are evident in the cross-sections of ivory. They are commonly referred to as cross-hatchings, engine turnings...
Cannibal God (1978)". AllMovie. Archived from the original on August 7, 2013. SCHREGER, C. (Feb 16, 1980). "Sho west: A little of this 'n' that". Los Angeles...
Columbo, R. (1559). De re anatomica. Libri XV. Venice: Nicola Beviliacqua. Schreger, C.H.Th. (1805). Synonymia anatomica. Synonymik der anatomischen Nomenclatur...
Archived from the original on April 3, 2022. Retrieved July 31, 2021. Schreger, Charles (December 17, 1979). "Utah Cowboy—A Star is Born?". The Los Angeles...
"Her's to old Ernie". Philadelphia Daily News. July 25, 1977. p. 30. SCHREGER, CHARLES (July 2, 1979). "A Brother Act a la Carradines, Keaches and Quaids"...
Wickes Man". Infinity Magazine. No. 20. p. 59. Retrieved 29 December 2022. SCHREGER, C. (22 July 1979). "THE CASTING DIRECTORS--WHO, WHAT, WHY, HOW". Los Angeles...
Clarendon Press. founded on Andrews' edition of Freund's Latin dictionary Schreger, C.H.Th. (1805). Synonymia Anatomica. Fürth: im Bureau für Literatur. Synonymik...
(2001) Evolver (2003) Non-Stop Ride (2004 remix compilation) The Shadow Line (2006) Unplugged (2007 EP) At the Edge of the World (2008) The Shadow Re-Aligned...
Itaborai in Brazil. Lamegoia possessed transversal and highly wavy Hunter-Schreger bands (structures present on the teeth, used for strengthening the enamel ;...
Retrieved September 1, 2016. Deeley, p. 179 Deeley, p. 192 Deeley, p. 4 Schreger, Charles (April 15, 1985). "Altman, Dolby, and the Second Sound Revolution"...
McCABE, BRUCE. Boston Globe 5 June 1981: 1. 'Buffalo' Roams Super Bowl SCHREGER, CHARLES. Los Angeles Times 1 Sep 1979: b4. MOVIES: LONE RANGER AND TONTO--THEY'RE...
Violence at Theatres: Protest at Loew's State". The New York Times. p. A18. Schreger, Charles (July 2, 1979). "A Brother Act a la Carradines, Keaches and Quaids"...
Discontinues Movie Operations". The New York Times. Retrieved January 2, 2014. Schreger, Charles (May 27, 1979). "ABC looks to big screen". The Spokesman-Review...
ivory looks similar to elephant ivory, but the former is browner and the Schreger lines are coarser in texture. In the 21st century, global warming has made...
are composed of two layers: the inner portio interna (PI) with Hunter-Schreger bands (HSB) and an outer portio externa (PE) with radial enamel (RE). It...
arcs can go by several names such as engine turnings, cross-hatchings, or Schreger lines (named after the German anatomist who first described them in 1800)...
Global Information
