Journal Article

PUBDB-2026-03363

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png 100-million-years-old “island-surfing”: SRµCT of Cretaceous genitals reveals the first fossils of the Gondwanan group Dalodesmidae

Le Cadre, J. (Corresponding author)Extern* ; Fabrikant, D.Extern* ; Hammel, J. U.Hereon* ; Spelda, J. ; Melzer, R. R.

2027
Elsevier Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.gr.2026.09.010  doi:10.3204/PUBDB-2026-03363

Abstract: Lack of diagnostic characters in fossils is a widespread issue in palaeontology. Although Kachin amber (∼100 Ma) is yielding exceptional specimens, a major proportion of low preservation fossils are disregarded. In flat-backed millipedes (Polydesmida), this issue is critical as only two species are identified out of hundreds of reported fossils. With the popularisation of micro-tomography and synchrotron-based micro-tomography for palaeontology, it is important to assess their strengths in investigating difficult and low-preservation specimens. We report its success in capturing fully intact gonopods from two fossils of low preservation. Both specimens belong to the same new genus Dalocarinatus gen. nov., but represent two species: D. luxuriosus sp. nov. and D. inopinatus sp. nov. They are the oldest and definitive fossil representatives of the group Dalodesmidae, they also offer a glimpse of their presence on Burma Terrane, expanding their current-day geographical distribution, which is restricted to past Gondwanan regions.

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Contributing Institute(s):

1. DOOR-User (DOOR)
2. Helmholtz-Zentrum Hereon (Hereon)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P05 (PETRA III)

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection ; Zoological Record

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