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Response to Bolton et al.

Nicholas J Strausfeld1, David R Andrew2, Frank Hirth3

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|February 24, 2026
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Summary
This summary is machine-generated.

Our study identified fossilized euarthropod nervous systems, validating our methods for analyzing extant species. We refute claims of failure in identifying key arachnid nervous system features and their phylogenetic significance.

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Area of Science:

  • Paleontology
  • Neurobiology
  • Arthropod Science

Background:

  • Fossilized nervous systems offer insights into euarthropod evolution.
  • Comparative analysis with extant species is crucial for interpreting fossil data.
  • Previous studies have applied similar methods to Cambrian taxa.

Purpose of the Study:

  • To investigate the identity of a fossilized euarthropod nervous system.
  • To validate the methodology of comparing fossil nervous systems with extant species.
  • To address specific claims regarding the identification of arachnid nervous system features.

Main Methods:

  • Comparative analysis of fossilized euarthropod nervous systems with extant species.
  • Detailed examination of neuroanatomical features.
  • Phylogenetic analysis incorporating neural and respiratory system data.

Main Results:

  • The identity of the fossilized euarthropod nervous system was investigated.
  • Claims of failure to identify features of the extant arachnid prosomal nervous system were invalidated.
  • The study demonstrated the utility of neural characters in understanding arthropod relationships.

Conclusions:

  • The methodology used is effective for identifying fossilized nervous systems.
  • The study successfully identified key features of the arachnid nervous system.
  • Neural characters can contribute to disambiguating phylogenetic relationships in euarthropods.