A giant stem-group chaetognath-Reference-Cited by-同舟云学术

A giant stem-group chaetognath

Published:2024-01-05 Issue:1 Volume:10 Page:
ISSN:2375-2548
Container-title:Science Advances
language:en
Short-container-title:Sci. Adv.

Author:

Park Tae-Yoon S.¹²^ORCID,Nielsen Morten Lunde¹³⁴^ORCID,Parry Luke A.⁵^ORCID,Sørensen Martin Vinther⁶,Lee Mirinae¹^ORCID,Kihm Ji-Hoon¹²^ORCID,Ahn Inhye¹²,Park Changkun¹^ORCID,de Vivo Giacinto⁷^ORCID,Smith M. Paul⁸^ORCID,Harper David A. T.⁹^ORCID,Nielsen Arne T.¹⁰^ORCID,Vinther Jakob³¹¹^ORCID

Affiliation:

1. Division of Earth Sciences, Korea Polar Research Institute, 26 Songdomirae-ro Yeonsu-gu, Incheon 21990, Republic of Korea.

2. University of Science and Technology, 217 Gajeong-ro, Daejeon 34113, Republic of Korea.

3. School of Earth Sciences, Palaeobiology Research Group, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol BS8 1TQ, UK.

4. British Geological Survey, Nicker Hill, Keyworth NG12 5GG, UK.

5. Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK.

6. Natural History Museum of Denmark, University of Copenhagen, Copenhagen DK-1350, Denmark.

7. Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy.

8. Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW, UK.

9. Palaeoecosystems Group, Department of Earth Sciences, Durham University, Durham DH1 3LE, UK.

10. Department of Geoscience and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, Copenhagen DK-1350, Denmark.

11. School of Biological Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol BS8 1TQ, UK.

Abstract

Chaetognaths, with their characteristic grasping spines, are the oldest known pelagic predators, found in the lowest Cambrian (Terreneuvian). Here, we describe a large stem chaetognath, Timorebestia koprii gen. et sp. nov., from the lower Cambrian Sirius Passet Lagerstätte, which exhibits lateral and caudal fins, a distinct head region with long antennae and a jaw apparatus similar to Amiskwia sagittiformis . Amiskwia has previously been interpreted as a total-group chaetognathiferan, as either a stem-chaetognath or gnathostomulid. We show that T. koprii shares a ventral ganglion with chaetognaths to the exclusion of other animal groups, firmly placing these fossils on the chaetognath stem. The large size (up to 30 cm) and gut contents in T. koprii suggest that early chaetognaths occupied a higher trophic position in pelagic food chains than today.

Publisher

American Association for the Advancement of Science (AAAS)

Link

https://www.science.org/doi/pdf/10.1126/sciadv.adi6678

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