🪐 View in 3D Galaxy 📏 View on 3D Scale Stage

🧬 Biological Classification (Kingdom to Species)Arthropleura armata

Kingdom

Animalia

Phylum

Arthropoda

Class

Myriapoda

Order

Arthropleurida

Family

Arthropleuridae

Genus

Arthropleura

Species

Arthropleura armata

📏 True-scale comparison (1 m = 1 m) against a 1.75 m humanLength 2.7m

· Grid units represent actual meters (m); human and animals are drawn to the exact same scale with original silhouette aspect ratios preserved.
· When a size range is recorded (e.g. 1–1.6m), the lower bound is used for scale comparison.
· Arthropleura silhouette: PhyloPic — Jun · CC BY 4.0
· Human silhouette: PhyloPic — NASA · Public Domain Mark 1.0

• Length vs. 1.75 m human: 1.5× / Mass vs. 70 kg: 0.71×Compare with other species →

Myriapoda❔ Diet unknown

Arthropleura

Arthropleura armata (Arthropleura · Arthropleura)

🛡️ Conservation Status (IUCN Red List)FOSSIL (Extinct Fossil)

Known only from fossils. The IUCN Red List assesses only species extant since 1500 CE, so fossil taxa are not assigned a category.

Geological Era

Late Carboniferous (~318.7 MYA)

Diet

No data

Length · Height

2.7m · No data

Mass · Top Speed

50kg · No data

Habitat & Fossil Locality

Open forests near the coast and river margins near the equator during the Carboniferous

💡 Everyday Comparisons for Size, Mass & Speed

💡 Its estimated body length of 2.7 m is about one and a half times the height of a 180 cm adult human (Comparison).
💡 Its estimated weight of 50 kg is about the weight of a small adult human (Comparison).

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

📊 Mass & Speed Index (0–100)

⚖️ Mass Index (Blue Whale ~190 t = 100, log scale)57

Site-computed relative index from recorded values; not a formal scientific metric.

#아르트로플레우라#Arthropleura armata

📖 1. Overview

Arthropleura armata is a giant millipede-like arthropod that lived during the Carboniferous and is the largest known invertebrate of all time. It lived in equatorial regions for about 45 million years before disappearing in the Permian.

🦴 2. Anatomy & Morphology

Made up of segmented exoskeleton plates, its body looked broadly similar to modern millipedes. A fossilized head has not yet been discovered.

🔍 3. Fossil Record & Paleoecology

Large fossils from Britain appear to be molted exoskeletons from river channels, suggesting it lived in open coastal forests rather than coal swamps. Its diet is uncertain; it may have eaten nuts and seeds or hunted small invertebrates and amphibians.