Size Calculations for Titanoboa.

Size calculations for Titanoboa:

Size Speculations: 42-47 feet (12.8-14.3 meters). (Head et al., 2009 and 2013)

Skull: 
40 cm (Head et al., 2013).

The Percentage Increase/Decrease Method:
1. Take new number and subtract it from original number.
2. Take that number and divide it by the original number and multiply by 100.
3. That number will by your percentage increase or decrease if it's negative.

Ex.: "Stan's" Femur is 130 and has a body length of 12.2 meters. "Wyrex" has a femur length of 132.7 cm.

132.7 - 130 = 2.7.
2.7 divided by (represented by "/") and multiplied by (represented by "*") equals 2.1.
(2.7/130*100 = 2.1)
2.1 is your percentage increase, or 2.1% increase.
12.2 m + 2.1% = 12.5 meters for "Wyrex."

Links:
Percentage Increase/Decrease Method Links:
"Percentage Change - Percentage Increase and Decrease." SkillsYouNeed:

https://www.skillsyouneed.com/num/percent-change.html
"Relative Increase." percentage.calculators.ro:
https://percentages.calculators.ro/15-percentage-increase-from-original-number-to-new-value.php

Model: Anaconda:

1. Specimen from Isern and Lapaz (2015):
Body: 3.3 meters long. (Isern and Lapaz, 2015, Material and Methods)
Skull: 9.6 cm long (From snout to end of cheek). (Measured on 9/22/19 in Isern and Lapaz, 2015)

Link:
Isern and Lapaz (2015):
https://www.researchgate.net/publication/284182159_NATURALIZATION_OF_AN_OPHIDIA_Eunectes_murinus

2. Skull: 5 3/4 inches. (Skulls Unlimited) (Acorn Naturalists) (Bone Clones) (The Bone Room)

Note: 5 3/4 inches is 14.6 cm, based on Google.

Specimen from Isern and Lapaz (2015):
Body: 3.3 meters long.
Skull: 9.6 cm long.

14.6 - 9.6 = 5.
5/9.6*100 = 52.1% increase.
3.3 cm + 52.1% = 16 feet (5.0 meters).

Length: 16 feet (5.0 meters).

Links:
Skulls Unlimited:
https://www.skullsunlimited.com/products/replica-anaconda-skull-bc-119
Acorn Naturalists:

https://www.acornnaturalists.com/anaconda-skull-replica.html
Bone Clones:
https://boneclones.com/product/anaconda-skull-BC-119
The Bone Room:
https://www.boneroom.com/store/p1217/Bone_Clones®_Anaconda_Skull.html

Anaconda Individual with a 14.6-cm Skull:
Skull: 14.6 cm.
Body: 5.0 meters.

40 - 14.6 = 25.4.
25.4/14.6*100 = 174% increase.
5.0 m + 174% = 45 feet (13.7 meters).

Titanoboa's Total Length: 45 feet (13.7 meters).

Link:

Head et al., (2013):

https://www.researchgate.net/publication/280610583_Cranial_osteology_Body_Size_Systematics_and_Ecology_of_the_giant_Paleocene_Snake_Titanoboa_cerrejonensis

Head et al., (2009):

https://www.researchgate.net/publication/23980887_Giant_boid_snake_from_the_Palaeocene_neotropics_reveals_hotter_past_equatorial_temperatures

Time Periods:

International Chronostratigraphic Chart (2019 Version):

http://stratigraphy.org/ICSchart/ChronostratChart2019-05.jpg
Link 2:

http://stratigraphy.org/index.php/ics-chart-timescale