A new glimpse on Mesozoic zooplankton—150 million-year-old lobster larvae
Larvae of malacostracan crustaceans represent a large fraction of modern day zooplankton. Plankton is not only a major part of the modern marine ecosystem, but must have played an important role in the ecosystems of the past as well. Unfortunately, our knowledge about plankton composition of the pas...
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| Format: | Article |
| Language: | English |
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PeerJ Inc.
2017-02-01
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| Online Access: | https://peerj.com/articles/2966.pdf |
| _version_ | 1827606260453736448 |
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| author | Joachim T. Haug Carolin Haug |
| author_facet | Joachim T. Haug Carolin Haug |
| author_sort | Joachim T. Haug |
| collection | DOAJ |
| description | Larvae of malacostracan crustaceans represent a large fraction of modern day zooplankton. Plankton is not only a major part of the modern marine ecosystem, but must have played an important role in the ecosystems of the past as well. Unfortunately, our knowledge about plankton composition of the past is still quite limited. As an important part of today’s zooplankton, malacostracan larvae are still a rarity in the fossil record; many types of malacostracan larvae dominating the modern plankton have so far not been found as fossils. Here we report a new type of fossil malacostracan larva, found in the 150 million years old lithographic limestones of southern Germany (Solnhofen Lithographic Limestones). The three rather incomplete specimens mainly preserve the telson. A pronounced middle spine on the posterior edge of these specimens indicates that they are either larval forms of a clawed lobster or of an axiidean lobster, or of a closer relative to one of the two groups. The tergo-pleura are drawn out into distinct spines in one specimen, further supporting the interpretation as a larva of a clawed lobster or an early relative. The telson morphology also shows adaptations to a prolonged planktic life style, the latero-posterior edges are drawn out into distinct spines. Similar adaptations are known in larvae of the modern homarid lobster Nephrops norvegicus, not necessarily indicating a closer relationship, but convergent life styles. The new finds provide an important new insight into the composition of Mesozoic zooplankton and demonstrate the preservation potential of lithographic limestones. |
| first_indexed | 2024-03-09T06:34:39Z |
| format | Article |
| id | doaj.art-e418666742364a19900fa5b53aceb68c |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T06:34:39Z |
| publishDate | 2017-02-01 |
| publisher | PeerJ Inc. |
| record_format | Article |
| series | PeerJ |
| spelling | doaj.art-e418666742364a19900fa5b53aceb68c2023-12-03T11:01:04ZengPeerJ Inc.PeerJ2167-83592017-02-015e296610.7717/peerj.2966A new glimpse on Mesozoic zooplankton—150 million-year-old lobster larvaeJoachim T. Haug0Carolin Haug1Department of Biology, Ludwig-Maximilians-Universität München, Planegg-Martinsried, GermanyDepartment of Biology, Ludwig-Maximilians-Universität München, Planegg-Martinsried, GermanyLarvae of malacostracan crustaceans represent a large fraction of modern day zooplankton. Plankton is not only a major part of the modern marine ecosystem, but must have played an important role in the ecosystems of the past as well. Unfortunately, our knowledge about plankton composition of the past is still quite limited. As an important part of today’s zooplankton, malacostracan larvae are still a rarity in the fossil record; many types of malacostracan larvae dominating the modern plankton have so far not been found as fossils. Here we report a new type of fossil malacostracan larva, found in the 150 million years old lithographic limestones of southern Germany (Solnhofen Lithographic Limestones). The three rather incomplete specimens mainly preserve the telson. A pronounced middle spine on the posterior edge of these specimens indicates that they are either larval forms of a clawed lobster or of an axiidean lobster, or of a closer relative to one of the two groups. The tergo-pleura are drawn out into distinct spines in one specimen, further supporting the interpretation as a larva of a clawed lobster or an early relative. The telson morphology also shows adaptations to a prolonged planktic life style, the latero-posterior edges are drawn out into distinct spines. Similar adaptations are known in larvae of the modern homarid lobster Nephrops norvegicus, not necessarily indicating a closer relationship, but convergent life styles. The new finds provide an important new insight into the composition of Mesozoic zooplankton and demonstrate the preservation potential of lithographic limestones.https://peerj.com/articles/2966.pdfNephropidaUpper jurassicHomaridaZoeaSolnhofen |
| spellingShingle | Joachim T. Haug Carolin Haug A new glimpse on Mesozoic zooplankton—150 million-year-old lobster larvae PeerJ Nephropida Upper jurassic Homarida Zoea Solnhofen |
| title | A new glimpse on Mesozoic zooplankton—150 million-year-old lobster larvae |
| title_full | A new glimpse on Mesozoic zooplankton—150 million-year-old lobster larvae |
| title_fullStr | A new glimpse on Mesozoic zooplankton—150 million-year-old lobster larvae |
| title_full_unstemmed | A new glimpse on Mesozoic zooplankton—150 million-year-old lobster larvae |
| title_short | A new glimpse on Mesozoic zooplankton—150 million-year-old lobster larvae |
| title_sort | new glimpse on mesozoic zooplankton 150 million year old lobster larvae |
| topic | Nephropida Upper jurassic Homarida Zoea Solnhofen |
| url | https://peerj.com/articles/2966.pdf |
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