All Angles Creatures
Squamata · AmphisbaenidaeEntry 1,078 of 21,572

Reptilia · Squamata

Amphisbaena townsendiStejneger, 1911

Townsend's Worm Lizard

No photograph of this species exists under a license anyone may reuse. It gets the same page regardless.

A burrowing lizard from the Neotropic region, reaching 252 mm snout to vent.

ReptiliaSquamataAmphisbaenidaeAmphisbaena

We do not have enough on this species yet

Catalogue of Life records this animal’s name, its family and where it sits in the tree of life. Beyond that, only 21 facts are on record — no diet, no lifespan, nothing we would be willing to publish as an entry.

So this page waits here rather than pretending to be one. It is not listed and not submitted to search engines. If you know this animal and can point us at a published source, we would rather have it right than have it soon.

Grows to
252mm
greatest recorded
Lives
Fossorial
Weighs up to
11.74g
greatest
Body length across Amphisbaenidae

Longer than 55% of all species in Amphisbaenidae anyone has measured.

55% of 178 species are smaller45% larger
107 mmthe whole family, smallest to largest810 mm

The bar is the rank itself: its length is the share of the family this animal exceeds. The chart below is the family’s real spread, on a logarithmic scale because body length here runs from 107 to 810 mm. The solid rule is this animal. Every bar is a count of real species, and nothing on this figure is estimated.

What is known

21 sourced facts, each taken from a named scientific dataset. How to read these.

Cited from a dataset unless a row is marked otherwise.

Standing in the world

Still living
Extant

The animal itself

Limbs
None
Venomous
No
Fangs
None

Size

Length snout to vent · greatest recorded
252mm10 in

max 252 mm SVL (Feldman et al. 2016)

Length snout to vent · adult female mean
202.5mm8 in
Largest female · snout to vent
202.5mm8 in

snout-vent length; the source column mixes this with straight carapace length

Body mass · greatestcomputed
11.74g0.41 oz

computed from length by a family-level allometric equation, not weighed

How it lives

Where it lives
Fossorial

Rodda 2020

Habitat
Savanna
Biome
Tropical & Subtropical Dry Broadleaf Forests
Region
Neotropic
Mainland or island
Mainland
Range size
497km²

Naming and history

Suborder
Amphisbaenia
Infraorder
Amphisbaenia (Laterata)
Subspecies
No
Described by
Stejneger
Moved to another genus · since it was first described
No
Described in
1911
Type locality
Peru

What nobody knows

These are not gaps in our research. No scientific dataset records them for this species — and saying so is information you cannot get from a reference that simply leaves a field out.

  • Length snout to vent · adult male mean
  • Length snout to vent · adult mean
  • Length nose to tail · greatest recorded
  • Female length · mean, nose to tail
  • Length nose to tail · adult male mean
  • Length nose to tail · adult mean
  • Largest male · snout to vent
  • Largest female · shell length
  • Largest male · shell length
  • Hatchling length · snout to vent
  • Hatchling length · nose to tail
  • Largest juvenile · snout to vent
  • Largest juvenile · shell length
  • Egg length
  • Egg width
  • Body mass · a typical adult
  • Body mass · adult female, mean
  • Body mass at hatching
  • Longest recorded life
  • Preferred body temperature · chosen in a laboratory gradient
  • Body temperature when active · measured in the wild
  • Diet
  • Eats arthropods
  • Eats vertebrates
  • Eats plant matter
  • How it hunts
  • Active
  • Reproduction
  • How the young develop
  • Gestation or incubation
  • Average clutch
  • Smallest clutch recorded
  • Largest clutch recorded
  • Mean clutch · smallest reported
  • Mean clutch · largest reported
  • Clutches in a year
  • Clutches a year · fewest
  • Clutches a year · most
  • First breeds from · youngest recorded
  • First breeds by · oldest recorded
  • Hatchling length · smallest recorded
  • Hatchling length · largest recorded
  • Age at first breeding · female
  • Mature from · youngest recorded
  • Mature by · oldest recorded
  • Size at maturity · smallest recorded
  • Size at maturity · largest recorded
  • Body temp in the wild · lowest mean recorded
  • Body temp in the wild · highest mean recorded
  • Colour on the back
  • Pattern on the back
  • Pupil
  • Sex decided by
  • Conservation status
  • Status assessed · the year the Red List last looked
  • Population trend
  • Red List criteria
  • Active season · shortest recorded
  • Active season · longest recorded
  • Density · lowest recorded
  • Density · highest recorded
  • Home range · largest recorded
  • Active in
  • Lowest it lives · above sea level
  • Highest it lives · above sea level

Others in Amphisbaenidae

Sources

  1. Meiri, S. (2024). SquamBase — a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography. Public domain (CC0).
  2. Catalogue of Life (dataset 3LR), used under CC BY.
  3. Oskyrko, O. et al. (2024). ReptTraits: a comprehensive dataset of ecological traits in reptiles. Scientific Data. Used under CC BY 4.0.