Table 1. Additions and adaptations to the original mesowear technique-ordered by mesowear technique and date.

Technique	References	Description	Scores
Original mesowear—Mesowear I	Fortelius & Solounias (2000)	–Using the naked eye or ×10 magnification	OR: low, high
		–Scoring only sharpest buccal cusp of maxillary M2	CS: blunt, round, sharp
		–Last molar in occlusion and M1 shape similar to M2
		–Percentage of high relief and Percentage of sharp, round and blunt cusps
Mesowear I—Adapted for Equidae	Kaiser & Fortelius (2003)	Method extended to all apices on maxillary P4–M3 in equids	Replaces original mesowear
Mesowear I	Franz-Odendaal & Kaiser (2003)	Method extended to maxillary M3, and mandibular M2 in ruminants	Replaces original mesowear
Mesowear I—Adapted for Lagomorpha	Fraser & Theodor (2010)	‘Cusp relief’ combined with ‘buccal shearing crush wear’ on maxillary and mandibular P4–M2–resulting in 5 dietary classes	1: 45° enamel-dentine relief with no additional wea 2: 45° enamel-dentine relief with buccal shearing crush wear 3: 45° enamel-dentine relief with buccal shearing crush & phase II wear 4: 90° enamel-dentine relief with no additional wear 5: 90° enamel-dentine relief with buccal shearing crush wear
Mesowear I—Adapted for Conodonta	Purnell & Jones (2012)	Scored on P1 elements	Not truly mesowear, does not have scores
Mesowear I—Adapted for Leporines & Murines	Ulbricht, Maul & Schulz (2015)	Classical mesowear on the maxillary M1–M2, and mandibular p3 in leporinae and distal side of the maxillary M1 and mandibular m1 in murinae	Same scores as original mesowear
Mesowear I—Adapted for voles	Kropacheva et al. (2017)	Maxillary M1–M2, mandibular m1	Occlusal relief 1–7
			Lateral facet development 1–3
Mesowear II—‘Mesowear ruler’	Mihlbachler et al. (2011)	Simplified score using gauges and a seven-point system	Combined score 0–6
Mesowear II—‘Mesowear ruler’	Wolf, Semprebon & Bernor (2012)	Additional intermediate scores	Combined score 0–13 in increments of 0.5
‘Mesowear angles’—Adapted for Proboscidea	Saarinen et al. (2015)	‘Mean mesowear angles of three central lamellae in occlusion’ on all except deciduous teeth	Mean mesowear angle <106°: C3-plant based diet >130°: C4-plant based diet (grazer)
“Mesowear angles”–Adapted for Xenarthra	Saarinen & Karme (2017)	All molariform teeth	For Xenarthra, Folivora: Mean mesowear angle: 60°–85°: fruit browsers 75°–100°: leaf browsers 100–132°: mixed-feeders 132°–150°: grass dominated mixed-feeders 150°–190°: grazers For Xenarthra, Cingulata: 60°–100°: carnivore, insectivore, omnivore, possibly browsers 100°–125°: browse-dominated mixed-feeders & herbivorous omnivores 125°–152°: grass-dominated mixed-feeder 152°–190°: grazers
Mesowear II	Mihlbachler & Solounias (2006)	Simplified score, only proportion of sharp cusps	Proportion of sharp cusps: 40–100%: Clean browser 20–40%: Mixed feeders: 0–20%: Grazer
Mesowear II ‘quantitative mesowear’	Widga (2006)	Interval measurements of cusp and saddle heights to calculate cusp relief	Index of cusp relief: Low ICR: grazer High ICR: browser
Mesowear II	Rivals & Semprebon (2006)	Simplified score combining OR and CS	0: high relief & sharp cusps 1: high relief & round cusps 2: low relief & round cusps 3: low relief & blunt cuspss
Mesowear II	Kaiser (2009)		0: high relief & sharp cusps
			1: high relief & round cusps
			2: low relief & sharp cusps
			3: low relief & round cusps
			4: low relief & blunt cusps
Mesowear II	Rivals, Schulz & Kaiser (2009)		0: high relief & sharp cusps
			1: high relief & round cusps
			2: low relief & round cusps
			2.5: low relief & sharp cusps
			3: low relief & blunt cusps
Mesowear II	Croft & Weinstein (2008)		0: high relief & sharp cusps
			1: high relief & round cusps
			2: low relief & round cusps
			2.5: low relief & sharp cusps
			3: high/low relief & blunt cusps
Mesowear II	Fraser et al. (2014)	Method extended to mandibular P4–M3 for ruminants	1: high relief & sharp cusps 2: high relief & round cusps 3: high relief & very round cusps 4: low relief & round-blunt cusps 5: low relief & flat-blunt cusps
Mesowear II—Adapted for Marsupialia	Butler, Louys & Travouillon (2014)	Use of classical mesowear and a combined score on the maxillary left maxillary molars, scoring sharpest buccal cusp	Combined score as in Kaiser (2009)
Mesowear I & II—Expanded	Winkler & Kaiser (2011)	Intermediate stages added to original and combined score	OR: low, high-low, high, high-high CS: blunt, round-round, round, round-sharp, sharp
			Combined score 1–17
Mesowear I and II—Expanded, Adapted for Rhinocerotidae	Taylor et al. (2013)	Expanded version and combined score on maxillary P2–M2.	Combined score 1–11
Mesowear III—‘Inner mesowear’	Solounias et al. (2014)	Scores the second enamel band, using a stereo-microscope Mesial side, distal side and junction point are scored separately	Enamel band wear states: 1: ideal browser 2–3: intermediate 4: ideal grazer Junction point score 1–4