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Table 1 Selected measurements of Zygodactylus ochlurus n.sp. compared to other zygodactylids [3,4,5,6, 8, 9]

From: A new zygodactylid species indicates the persistence of stem passerines into the early Oligocene in North America

  SKL COR HUM ULN CMC FEM TIB TMT pI1 pI2 pII1 pII2 pII3 pIII1 pIII2 pIII3 pIII4 GM FEM/
GM
CMC/
GM
pI1/
pes
pIII1/
pes
YPM VPPU 17053
Zygodactylus ochlurus n.sp.
Holotype
21.0 ~ 8.7/
~ 8.7
12.5/ ~ 13.2/
14.7
6.7/ /
10.3
/
~ 21.4
15.6/
15.4
3.8/ 2.0/ 3.2/ 3.0/ 3.3/ /
2.8
/
3.3
/
3.0
/
2.0
12.6 0.82 0.53 0.23 0.17
SMF Av 519a
Zygodactylus luberonensis
Holotype
35.0 14.7/ 17.2/
17.2
18.1/ /
8.6
~ 19.5/ 34.8/
34.7
24.6/
24.5
/
4.6
/
2.1
/
6.5
/
4.6
/
2.7
/
7.1
/
6.5
/
5.4
/
3.1
18.8 1.04 0.46 0.16 0.25
FMNH PA 726b
Zygodactylus grandei
Holotype
21.1 13.7/ 18.3/18.6 19.3/ ~ 8.5 15.1/ 33.0/33.6 21.4/20.4 4.6/4.3 2.6/2.7 /5.2 4.7/4.6 3.0 6.0/5.8 5.0/5.2 4.2/4.4 3.8/3.9 17.9 0.84 0.47 0.17 0.22
USNM 299821c
Eozygodactylus americanus
~ 19   16.8/
16.8
~ 19/
19.1
/
8.8
                 
WDC-CGR-014c
Eozygodactylus americanus
  13.8/
~ 13.1
/
~ 17.2
~ 18.2/ 8.8/ 19.7/ /
30.6
21.7/
21.8
5.4/
~ 5.6
2.5/
~ 2.0
/
5.9
5.1/
5.2
2.9/
~ 2.2
~ 6.0/
~ 4.6
5.7/
5.7
4.7/
4.8
~ 2.7/
3.3
18.2 1.08 0.48 0.21 0.20
SMF-ME 1758a + bd
Primozygodactylus major
Holotype
   ~ 28.4/ ~ 31.1/ ~ 12.0/ 24.6/ 39.0/
39.8
28.0/           25.7 0.96 0.47   
SMF-ME 2108d
Primozygodactylus ballmanni
Holotype
   21.0/
20.5
22.9/
22.9
~ 9.0
/~ 9.5
20.8/ 33.0/ 24.6/           20.5 1.02 0.45   
SMF-ME 2522a + bd
Primozygodactylus danielsi
Holotype
   16.5/
16.4
18.3/
~ 17.4
8.2/
8.1
/
16.5
27.4/
27.3
19.6/
~ 18.3
4.0/ 2.4/ 4.8/ 4.3/ 2.4/ 5.7/ 4.9/ 4.3/ 2.6/ 16.5 1.00 0.49 0.17 0.24
SMF-ME 1074d
Primozygodactylus eunjooae
Holotype
      17.5/ 29.8/ ~ 21.7
/~ 21.7
              
SMF-ME 11091a + bd
Primozygodactylus quintus
Holotype
   19.7/ 20.0 20.7/20.7 9.5/9.5   32.5/32.5 22.8/23.1               
SMF-ME 11171a + bd
Primozygodactylus longibrachium
Holotype
   > 19/ 19.6 21.4/> 21 9.6/   29.5/29.5 /19.0               
  1. aafter [2]
  2. bafter [6]
  3. cafter [9]
  4. dafter [5]
  5. SKL Rostrocaudal skull length, COR Coracoid, HUM humerus, ULN ulna, CMC carpometacarpus, FEM femur, TIB tibia, TMT tarsometatarsus, pI1 – pIII4 pedal digit (I-III) phalanx (1–4), measured in mm. GM geometric mean of HUM, ULN, CMC, FEM, TIB, and TMT; pI1/pes and pIII1/pes: pedal digit I/III proximal phalanx, scaled against the sum of lengths of the non-ungual phalanges of pedal digits I & III