File:20190913 Arthropoda Head Segments Appendages En.png
- 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: Euhelicerata (euchelicerate: "merostome" and arachnid):
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:
References:
- Ortega-Hernández, Javier; Janssen, Ralf; Budd, Graham E. (2017-05). Origin and evolution of the panarthropod head – A palaeobiological and developmental perspective. Arthropod Structure & Development 46 (3): 354–379. doi:10.1016/j.asd.2016.10.011
- Overall review.
- Dunlop, Jason A.; Lamsdell, James C. (2017-05). Segmentation and tagmosis in Chelicerata. Arthropod Structure & Development 46 (3): 395–418. doi:10.1016/j.asd.2016.05.002
- Chelicerata, Megacheira.