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11-14-15
_________________________
1 https://en.wikipedia.org/wiki/Loxocemidae
2 http://www.inaturalist.org/taxa/32290-Loxocemus-bicolor
3 https://en.wikipedia.org/wiki/Pythonidae
4https://en.wikipedia.org/wiki/Antaresia_perthensis
5 https://en.wikipedia.org/wiki/Green_tree_python
6 https://www.racinezoo.org/green-tree-python-fact-sheet
7  https://answers.yahoo.com/question/index;_ylt=AwrTcdGASdVV7HYACIEnnIlQ;_ylu=X3oDMTByMXM3OWtoBGNvbG8DZ3ExBHBvcwM4BHZ0aWQDBHNlYwNzcg--?qid=20070103073418AAxmCya&p=python%20weight
8http://animals.nationalgeographic.com/animals/reptiles/burmese-python/
9 https://en.wikipedia.org/wiki/Burmese_python
10 http://www.marylandzoo.org/animals-conservation/reptiles/indian-python/
11https://en.wikipedia.org/wiki/Python_molurus
12 https://en.wikipedia.org/wiki/Morelia_amethistina
13 https://en.wikipedia.org/wiki/Morelia_amethistina
14http://www.snaketype.com/reticulated-python/
15 http://wildworldofsnakes.com/wildworldofsnakes/Sizes%20of%20Snakes.html
16 https://en.wikipedia.org/wiki/African_rock_python
17http://www.arkive.org/african-rock-python/python-sebae/
18 https://en.wikipedia.org/wiki/Morelia_spilota_mcdowelli
19 https://en.wikipedia.org/wiki/Tropidophiidae
20https://en.wikipedia.org/wiki/Tropidophiidae
21 https://en.wikipedia.org/wiki/Uropeltidae
22 https://en.wikipedia.org/wiki/Uropeltidae
23https://en.wikipedia.org/wiki/Viperidae
24 https://en.wikipedia.org/wiki/Vipera_berus
25 http://www.funzoomiami.org/Animals/AllRegions/Reptiles/Eyelash-Viper
26https://en.wikipedia.org/wiki/Bothriechis_schlegelii
27 http://animals.nationalgeographic.com/animals/reptiles/eastern-diamondback-rattlesnake/
28 North American Wildlife, Mammals, Reptiles and Amphibians, (Reader's Digest, Pleasantville, New York 1998), 14929 http://www.zoo.org/sslpage.aspx?pid=1927#.VgCO8n2PN60
30https://en.wikipedia.org/wiki/Crotalus_durissus_unicolor
31 http://www.philadelphiazoo.org/Animals/Reptiles/Lizards-Snakes/Timber-Rattlesnake.aspx
32http://www.dgif.virginia.gov/wildlife/information/index.asp?s=030012
33 http://www.saczoo.org/document.doc?id=380
34 http://www.wildlifenorthamerica.com/Reptile/Northern-Pacific-Rattlenake/Crotalus/oreganus-oreganus.html
35https://en.wikipedia.org/wiki/Agkistrodon_piscivorus
36 https://en.wikipedia.org/wiki/Agkistrodon_piscivorus
37 http://www.lazoo.org/animals/reptiles/cottonmouth/
38https://en.wikipedia.org/wiki/Agkistrodon_piscivorus
39 Mammals, Reptiles and Amphibians40 https://en.wikipedia.org/wiki/Bitis_atropos
41http://www.wilderness-survival.net/snakes-6.php
42 http://www.wilderness-survival.net/snakes-6.php
43 http://www.wilderness-survival.net/snakes-6.php
44https://en.wikipedia.org/wiki/Echis_carinatus
45 http://goafrica.about.com/od/africasafariguide/tp/Africansnakes.htm
46 http://detroitzoo.org/animals/zoo-animals/mexican-lance-headed-rattlesnake/
47http://www.lpzoo.org/animals/factsheet/mexican-lance-headed-rattlesnake
48 https://en.wikipedia.org/wiki/List_of_reptiles_of_Michigan
49http://goafrica.about.com/od/africasafariguide/tp/Africansnakes.htm
50 https://en.wikipedia.org/wiki/Gaboon_viper
51 http://goafrica.about.com/od/africasafariguide/tp/Africansnakes.htm
52https://en.wikipedia.org/wiki/Xenopeltidae
53 https://en.wikipedia.org/wiki/Xenopeltidae
54 https://en.wikipedia.org/wiki/Xenopeltis_hainanensis
55https://en.wikipedia.org/wiki/Xenopeltis_unicolor
56 https://en.wikipedia.org/wiki/Anomalepididae
57 https://en.wikipedia.org/wiki/Anomalepididae
58https://en.wikipedia.org/wiki/Leptotyphlopidae
59 https://en.wikipedia.org/wiki/Leptotyphlopidae
60 https://en.wikipedia.org/wiki/Typhlopidae
61https://en.wikipedia.org/wiki/Ramphotyphlops_braminus
62 http://wildworldofsnakes.com/wildworldofsnakes/Sizes%20of%20Snakes.html
63http://www.whatsnakeisthat.com.au/typhlopidae.html
64 http://www.whatsnakeisthat.com.au/typhlopidae.html
65 http://www.siam-info.com/english/snakes_typhlopidae.html
66https://en.wikipedia.org/wiki/Amphisbaenidae
67 https://en.wikipedia.org/wiki/Amphisbaena_fuliginosa
68 https://en.wikipedia.org/wiki/Chirindia
69https://en.wikipedia.org/wiki/Bipedidae
70 https://en.wikipedia.org/wiki/Blanus
71 https://en.wikipedia.org/wiki/Cadea_%28genus%29
72https://en.wikipedia.org/wiki/Rhineura_floridana
73 https://en.wikipedia.org/wiki/Trogonophidae
74 https://en.wikipedia.org/wiki/Hydrophiinae
75https://en.wikipedia.org/wiki/Reptile
76 https://en.wikipedia.org/wiki/American_alligator
77 https://en.wikipedia.org/wiki/Chinese_alligator
78http://www.funzoomiami.org/Animals/AllRegions/Reptiles/African-Slender-Snouted-Crocodile
79 http://a-z-animals.com/animals/dwarf-crocodile/
80https://en.wikipedia.org/wiki/Freshwater_crocodile
81 https://en.wikipedia.org/wiki/Nile_crocodile
82 https://en.wikipedia.org/wiki/Siamese_crocodile
83https://en.wikipedia.org/wiki/Black_caiman
84 http://louisvillezoo.org/animalsandplants/crocodile-cuban/
85 https://en.wikipedia.org/wiki/Orinoco_crocodile
86http://mnzoo.org/blog/animals/west-african-dwarf-crocodile/
87 https://en.wikipedia.org/wiki/False_gharial
88 https://en.wikipedia.org/wiki/Saltwater_crocodile

Notes:
1. The number of extant species identified is constantly changing and usually increasing in number.
2. Weight information was often lacking in references for the lighter weight reptiles.
3. Weights in the Adult Ave. Wt. Used column:
a. Where weight ranges were given in references, the average of the weights were used.
b. Where maximum weights only were given, 75 percent of the maximum weights were used.
c. When only length information was available as indicated by “e” in the table, rough average weights were estimated based on the lengths and weights of other reptiles of similar size in the same group (order, suborder, family, etc.). There are some exceptions to this.
d. In a few cases where both weight and length information were not available and a number was necessary to complete calculations, then a rough estimate of average weight was assumed as indicated by “f” in the table.
Table 2 - Extant Reptile Weights (Continued)
Reptiles
Ref.
No. of
Reptile Adult Weights and Sizes
Adult Ave.
Ave. of
Total Wt.
No.
Species
from References
Wt. Used.
Adult Ave.
Males +
from
Wt. Used
Females
Ref.
(lb)
(lb)
(lb)
Loxocemidae
1
1
1.57
3
Mexican burrowing python
2
to roughly 2.99 ft ave.
1.57
e
Pythonidae
3
26
89.43
4650
Pygmy python
4
up to 19.5 in 210 g
0.46
Green tree python
5
m 2.4 to 3.1 lb f up to 3.5 lb
2.69
Green tree python
6
4 to 7 ft
Ball python
7
4.5 to 9 lb
6.75
Burmese python
8
up to 200 lb
150.00
Burmese python
9
12.1 ft
Indian python
10
200 lb
200.00
Indian python
11
7.9 to 9.8 ft
Scrub python
12
m 11 lb ave. f 33 lb typ.
22.00
Scrub python
13
6.6 to 13.1 ft
Reticulated python
14
up to 350 lb
262.50
Reticulated python
15
8.7 m
African rock python
16
97 to 121 lb, adults up to 71 lb per study
71.00
African rock python
17
up to 7.5 m
Coastal python
18
9 to 10 ft
Tropidophiidae (Dwarf boas, Eyelash boas)
19
22
0.90
40
20
12 to 24 in ave.
0.90
e
Uropeltidae (pipe and shield-tailed snakes)
21
47
0.94
88
22
20 and 75 cm
0.94
e
Viperidae
23
224
1.85
826
Common European adder
24
1.8 to 6.3 oz 24 to 35 in
0.25
Eyelash viper
25
up to 226 g
0.37
Eyelash viper
26
22 to 32 in
Eastern diamondback rattlesnake
27
up to 10 lb
7.50
Eastern diamondback rattlesnake
28
3 to 8 ft
Aruba rattlesnake
29
2 to 3 lb
2.50
Aruba rattlesnake
30
90 cm approx.
Timber rattlesnake
31
3 to 4 lb
3.50
Timber rattlesnake
32
36 to 60 in
Northern Pacific rattlesnake
33
5 lb
5.00
Northern Pacific rattlesnake
34
100cm
Cottonmouth snake
35
m 10.32 to 20.44 oz ave.
0.73
Cottonmouth snake
36
f 7.09 to 8.96 oz ave.
Cottonmouth snake
38
26 to 35 in
Cape mountain adder
40
about 12 to 16 in
0.70
e
Ursini's viper
41
45 cm ave.
0.89
e
Pallas' viper
42
45 cm ave.
0.89
e
Long-nosed adder
43
45 cm ave.
0.89
e
Saw-scaled viper
44
15 and 31 in
1.15
e
Saw-scaled viper
45
20 to 30 in ave.
1.25
e
Mexican lance-headed rattlesnake
46
7 to 10.5 oz
0.55
Mexican lance-headed rattlesnake
47
about 27 to 31 in typ.
Eastern massasauga rattlesnake
48
2 to 3 ft
1.50
e
Puff adder
49
around 1 m ave.
1.98
e
Gaboon viper
50
1
19 lb 69 in girth cir. 14.65 in
19.00
19.00
38
Gaboon viper
51
around 5 feet ave
Xenopeltidae
52
2
2.45
10
X. hainanensis (sunbeam snake)
54
0.5 to 1 m ave.
2.95
e
Xenopeltis unicolor (sunbeam snake)
55
3 ft 3 in ave. about
1.95
e
Anomalepididae (primitive blind snakes)
56
15
0.60
18
57
usually less than 12 in
0.60
e
Leptotyphlopidae (slender blind snakes)
58
87
0.59
103
59
rarely exceed 30 cm
0.59
e
Typhlopidae (blind snakes)
60
200
over
0.40
159
Brahminy blind snake
61
½ to 6½ in thin
0.09
e
Blind snake
62
30 cm
0.59
e
Small-headed blind snake
63
24 cm
0.47
e
Southern blind snake
64
29 cm
0.57
e
Common blind snake
65
to 18 cm max
0.27
e
Amphisbaenia (suborder)
Amphisbaenidae
66
120
over
0.51
122
Black-and-white worm lizard
67
12 to 18 in
0.75
e
Pink round-headed worm lizards
68
13.5 cm
0.27
e
Bipedidae
69
4
0.36
f
0.36
3
Blanus (genus)
70
7
0.36
f
0.36
5
Cadea (genus)
71
2
0.36
f
0.36
1
Rhineura (genus)
72
1
0.36
f
0.36
1
Trogonophidae
73
5
0.36
f
0.36
4
Total Species
9,615
Subtotal for this page only
6070
Total Wt. of Male and Female Couples (lb)
43239
50 % Total Wt. of Male and Female Couples (lb)
21620
Ave. Wt./Reptile excl. sea snakes and crocodilla (lb)
2.25
Say
3
Marine Reptiles Not on the Ark
Sea Snakes
74
62
Crocodilia (order)
75
25
325.06
15603
American alligator
76
up to 999 lb
749.25
Chinese alligator
77
80 lb
80.00
African slender snouted crocodile
78
275 to 716 lb
495.50
Dwarf crocodile
79
40 to 70 lb
55.00
freshwater crocodile
80
m 150 lb f 88 lb
119.00
Nile crocodile
81
496 to 1213 lb
854.50
Siamese crocodile
82
88 to154 lb
121.00
Black caiman
83
subadult m 106 lb
106.00
Cuban crocodile
84
m 400 lb f 150
275.00
Orinoco crocodile
85
m 840 lb f 496 lb
668.00
West African dwarf crocodile
86
40 to 70 lb
55.00
False gharial
87
m 420 to 460 lb f 205 lb
322.50
Saltwater crocodile
88
1
up to 3000 lb
2250.00
2250.00
4500
Total Wt. of Male and Female Crocodilia Couples (lb)
20103
Extant Reptiles