different between lectotype vs neotype

English

From Ancient Greek ?????? (léktos, “chosen”),from ?????? (légein, “to choose”) + ????? (túpos, “blow, impression”).

lectotype (plural lectotypes)

(taxonomy) A biological specimen or illustration later selected to serve as definitive type example of a species or subspecies when the original author of the name did not designate a holotype.
- 1968, Arcie Lee McAlester, Type Species of Paleozoic Nuculoid Bivalve Genera, Geological Society of America, Memoir 105, page 19,
  The lectotype and paratype, which are before me, are both iron-stained, predominantly internal composite molds of left valves in a fine-grained, white quartzite matrix.
- 2000, Scientific Papers, Natural History Museum, University of Kansas, page 27,
  Lectotype designation is justified under article 74.1.1 of the ICZN (1999) in order to fix the status of this specimen as the sole name-bearing type of this species.

neo- +? type

neotype (plural neotypes)

(taxonomy) A new specimen of a previously described species which, in order to maintain nomenclatural stability or solve doubtful or confusing identities, is designated to serve as the type specimen, possibly replacing a previous holotype or neotype

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