English: Alignment of anterior somites (body segments) and appendages across various
panarthropod taxa. Extinct taxa based on the most widely-accepted interpretations of mid 2010s.
- †: Extinct taxa
- 0: Ocular somite
- 1-2: Somite 1-10 (further somite(s) ommited)
- Dark grey: Somite(s) of head tagma (head/cephalon/prosoma)
- Red/P: Protocerebral somite/appendage
- Yellow/D: Deutocerebral somite/appendage
- Blue/T: Tritocerebral somite/appendage
†"Lobopodia" (lobopodian):
- Pan/Fa: Primary antenna/frontal appendage
- Lo: Lobopod
Onychophora (onychophoran/velvet worm):
- Pan: Primary antenna
- Ja: Jaw
- Slg: Slime gland/slime papilla
- Lo: Lobopod
Tardigrada (tardigrade/waterbear/moss piglet):
†Radiodonta (radiodont/radiodontan/anomalocaridid s. l.):
†Fuxianhuiida (fuxianhuiid):
- Hy/Lbr: Hypostome/labrum complex
- An: Antenna
- SPA: Specialized post-antennal appendage
- L: (Arthropodized) Leg/walking leg
†Megacheira (megacheiran/great appendage arthropod):
- Hy/Lbr: Hypostome/labrum complex
- SGA: Short-great appendage
- L: (Arthropodized) Leg/walking leg
†Artiopoda (artiopodan/artiopod: trilobite, aglaspidid etc.):
- Hy/Lbr: Hypostome/labrum complex
- An: Antenna
- L: (Arthropodized) Leg/walking leg
Chelicerata: Pycnogonida (pycnogonid/sea spider):
- ?: (Appendage unknown)
- Chf: Chelifore
- P: Palp
- Ovg: Oviger
- L: (Arthropodized) Leg/walking leg
Chelicerata: Euchelicerata (euchelicerate: "merostome" and arachnid):
- Hy/Lbr: Hypostome/labrum complex
- Chr: Chelicera
- Pp: Pedipalp
- L: (Arthropodized) Leg/walking leg
Myriapoda (myriapod: centipede, millipede etc.):
- Hy/Lbr: Hypostome/labrum complex
- An: Antenna
- Inc: intercalary segment
- Mnd: Mandible
- Mx1: First maxilla
- Mx2: Second maxilla
- L: (Arthropodized) Leg/walking leg
"Crustacea" (crustacean: shrimp, crab, barnacle, waterflea etc.):
- Hy/Lbr: Hypostome/labrum complex
- An1: First antenna/antennula/antennule
- An2: Second antenna/antenna
- Mnd: Mandible
- Mx1: First maxilla/maxillula
- Mx2: Second maxilla/maxilla
- L: (Arthropodized) Leg/walking leg
Hexapoda (hexapod: insect, springtail etc.)
- Hy/Lbr: Hypostome/labrum complex
- An: Antenna
- Inc: intercalary segment
- Mnd: Mandible
- Mx: Maxilla
- Lbi: Labium
- L: (Arthropodized) Leg/walking leg
Extant panarthropod version:
Euarthropod version:
References:
- Overall review.
- Chelicerata, Megacheira.