English: Alignment of anterior somites (body segments) and appendages across various
euarthropod 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
†
Fuxianhuiida (fuxianhuiid):
†
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: Euhelicerata (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
Panarthropod version:
Extant panarthropod version:
References:
- Overall review.
- Chelicerata, Megacheira.
日本語: