| 6 Afro-Asiatic | 6.2.2.1.6 Classical Arabic to Cypriot Arabic | f θ → p t / F_
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| 6.2.2.1.7 Classical Arabic to Egyptian Arabic | θ ð → t d / “usually in numbers or cases where a short vowel has been deleted and it’s in contact with another stop, e.g. CA/MSA kaˈθiːr → EA ktiːr”
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| θ ð → s z
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| 6.2.2.1.8 Classical Arabic to Coastal Hadhrami Arabic | θ ð ðˤ → t d dˤ
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| 6.2.2.1.9 Classical Arabic to Wādı̄ Hadhrami Arabic | θ ð ðˤ → t d dˤ
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| 6.2.2.1.10 Classical Arabic to Hassāniyya Arabic | f θ → v z̪ (the article isn’t exactly clear on what this second phone is)
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| 6.2.2.1.13 Classical Arabic to Western Libyan Arabic | θ ð(ˤ) → t d(ˤ)
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| 6.2.2.1.18 Proto-Semitic to Biblical Hebrew | θ θˤ ð ɬ ɬˤ → ʃ ʃˤ z s sˤ
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| 6.2.2.1.19 Biblical Hebrew to Modern Israeli Hebrew | w θ ð ɣ → v t d ɡ (sometimes)
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| 7 Algonquian | 7.1 Proto-Algonquian to Kennebec River Abenaki | θ → n / #_
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| θ → s / _k
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| θ → r
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| 7.2 Proto-Algonquian to St. Francis Abenaki | nθ nl → sː {sː,hl}
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| θ → n / #_
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| θ → s / _k
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| θ → l
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| 7.3 Proto-Algonquian to Proto-Arapaho-Atsina | θ → ʃ / C_
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| θ h {s,m,n,r} → ʃ ∅ ʔ / _C
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| 7.3.2 Proto-Arapaho-Atsina to Gros Ventre | ʃ θ m → θ t w / _o(ː)
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| ʃ θ m k → θ t b tʃ / _e(ː)
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| ʃ {θ,t} m k → s ts tʲ bʲ / _{i(ː),j,#}
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| 7.4 Proto-Algonquian to Blackfoot | {θ,tʃ,ʃ,r} → t / unless adjacent to another consonant
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| {ʔθ,ʔr} → {ʔ,j,∅}
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| nθ hs → sːt sː
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| θp tʃp ʃp → {x,sː} ʔp sːp
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| {k(ʷ)es,keθ} → sː
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| 7.5 Proto-Algonquian to Cheyenne | {(t)l,θ} → t
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| 7.6 Proto-Algonquian to Northern East Cree | θ → s / _k
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| θ → t
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| 7.7 Proto-Algonquian to Southern East Cree | θ → s / _k
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| θ → t
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| 7.8 Proto-Algonquian to Plains Cree | θ → s / _k
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| θ → t
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| 7.9 Proto-Algonquian to Swampy Cree | θ → s / _k
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| θ → t
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| 7.10 Proto-Algonquian to Woods Cree | θ → s / _k
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| θ → t
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| 7.11 Proto-Algonquian to Munsee Delaware | {θ,l} → r → l
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| {θ,ʃ} → {r,l}
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| {nθ,nl} → hl
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| θ ʃ x → x s h / _{p,k}
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| 7.12 Proto-Algonquian to Menominee | θ → s / _O
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| θ → r
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| 7.13 Proto-Algonquian to Miami-Illinois | {θ,l} → r → l / V_V
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| {θ,l} → r → n / #_ (and possibly in other places as well)
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| {θ,l} → r → l
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| {θ,l} → t / n_
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| {θ,ʃ,tʃ,ç,x,ʔ} → h / _C
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| 7.14 Proto-Algonquian to Mi’kmaq | n{θ,l} h{θ,ʃ} → ∅ s
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| ʔ{θ,ʃ} ʔl → s ∅
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| θ → l
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| 7.15 Proto-Algonquian to Ojibwe | {θ,s,h,ʔ} → ∅ / _{p,t,tʃ,k}
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| θ → r
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| 7.16 Proto-Algonquian to Piscataway | {θ,ʃ} → ɬ (conjectured based on 〈z〉 in the Piscataway source and on the lack of voicing in the original reconstructed sounds)
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| 7.17 Proto-Algonquian to Shawnee | {h,s,tʃ,θ} → ʔ / _O
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| 17 Indo-European | 17.7 Proto-Indo-European to Common Germanic | f θ s x → β ð z ɣ “(Except initially or following IE stress)”
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| 17.7.2.1.10 Old English to Scots | θ → h / _ɪ
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| θ → f / {V,r}_# (sometimes blocked)
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| θ → ∅
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| 17.7.2.1.12 Old English to Southern Middle English | f θ s ɣ → v ð z ɡ / #_
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| 17.7.2.2.1 Old Low Franconian to Middle Dutch | f θ s → v ð z / syllable-initially (h → ɦ?)
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| θ ð → t d
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| 17.7.2.4 High German Cosonant Shift and Umlaut | {θ,ð} → d
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| 17.7.2.5 West Germanic to Old Low German | f θ s → v ð z / syllable-initially
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| 17.7.3.1 Proto-Norse to Old Norse | θ → f / _l
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| {t,θ,d,ð} → ∅ / n_l
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| {t,θ,d,ð} → ∅ / l_n
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| V{θ,ð} → Vː / #(C)(C)(C)_{l,r}
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| lθ nθ → lː nː
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| (Vː)θt → (V)tː
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| θ → t / {p,t,k}_
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| θ f → ð v / {V,C[+ voiced]}_{V,C[+ voiced]}
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| lθ nθ → lː nː
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| f θ → v ð / #_
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| 17.7.3.1.2 Old Norse to Orkney Norn | θ → h / #_B
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| θ → ð / V_V
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| θ → t
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| 17.7.3.1.3 Old Norse to Shetland Norn | θ → {t,d}
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| 17.7.4 Common Germanic to Vandalic | θ ð → t d (not a complete change; apparently due to Latin)
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| 17.12.1 Proto-Italic to Proto-Latino-Falsican | {ɸ,θ} → f / #_
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| ɸ θ → b {d,b} / V_V
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| 17.12.1.1 Proto-Indo-European to Latin | s → θ → f / #_r
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| s → θ → b / _r
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| 17.12.1.1.10 Vulgar Latin to Spanish | kθ → θː
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| 17.12.2 Proto-Italic to Proto-Sibellian | {ɡ́ʰ,x} {ɸ,θ,ɡʷʰ} → h f
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| 28 Muskogean | 28.1 Proto-Muskogean to Proto-Eastern Muskogean | θ → ɬ
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| 28.2 Proto-Muskogean to Proto-Western Muskogean | θ → n
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| 37 Siouan-Iroquoian | 37.1 Proto-Siouan-Iroquoian to Proto-Iroquoian | ʃ θ → s t
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| 37.1.2.6.1 Tuscarora to Western Tuscarora | θ → s
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| 37.2 Proto-Siouan-Iroquoian to Proto-Siouan | θ → r
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| 42 Uralic | 42.1.1.1.1 Proto-Finnish to Standard Finnish | θ(ː) ð → ts d (this latter does have some highly sporadic exceptions; additionally, in some dialects these may become {t(ː),h~t} and {r,∅}, respectively)
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