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Summary

Description
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:
Date
Source Own work
Author Junnn11

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Date/TimeThumbnailDimensionsUserComment
current15:56, 30 July 2022Thumbnail for version as of 15:56, 30 July 20221,750 × 530 (31 KB)Junnn11
15:23, 30 July 2022Thumbnail for version as of 15:23, 30 July 20221,750 × 530 (31 KB)Junnn11alignment
15:15, 30 July 2022Thumbnail for version as of 15:15, 30 July 20221,750 × 530 (32 KB)Junnn11colour
14:35, 30 July 2022Thumbnail for version as of 14:35, 30 July 20221,750 × 530 (32 KB)Junnn11new diagram
14:35, 19 April 2022Thumbnail for version as of 14:35, 19 April 20221,750 × 530 (32 KB)Junnn11co
07:00, 9 November 2019Thumbnail for version as of 07:00, 9 November 20191,750 × 530 (32 KB)Junnn11Quotation marks for Crustacea.
18:01, 13 September 2019Thumbnail for version as of 18:01, 13 September 20191,750 × 530 (32 KB)Junnn11Cross-wiki upload from ja.wikipedia.org

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