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Lindwurmia

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Lindwurmia
Temporal range: Early Jurassic, Hettangian
Life reconstruction
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Superorder: Sauropterygia
Order: Plesiosauria
Family: Rhomaleosauridae
Genus: Lindwurmia
Vincent and Storrs, 2019
Species:
L. thiuda
Binomial name
Lindwurmia thiuda
Vincent and Storrs, 2019

Lindwurmia (named after the Lindwurm) is a rhomaleosaurid plesiosaur from the Early Jurassic of Germany. It contains a single species, Lindwurmia thiuda. It was a small plesiosaur, measuring 2 to 3 m (6.6 to 9.8 ft) long.[1]

Discovery and naming

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The holotype specimen

The holotype is an incomplete postcranium; the anterior section of the jaws, sixty nine vertebrae, a partial pectoral girdle, pelvic girdles, and the right fore- and hindlimbs.[1] It was discovered in the Psiloceras johnstoni ammonite subzone in the clay quarry of Thiemeke'shen Ziegelei in Halberstadt, Germany in 1899 by Johannes Maak, with the dragline excavator used to recover the specimen partially damaging it in the process; Maak had the specimen restored by 1900 and it was subsequently sent to the Halberstadt City Museum.

The specimen was then described Theodore Brandes, who described the specimen in 1912 and 1914. In 1912, he assigned the specimen to Plesiosaurus (Thaumatosaurus) aff. megacephalo,[2] and in 1914 Brandes re-assigned it to just Thaumatosaurus aff. megacephalo.[3] At an unknown point in time and without any prior scientific research, the Halberstadt City Museum had the specimen labeled as Eurycleidus arcuatus.[1]

In 2019, Peggy Vincent and Glenn William Storrs named and described the type species Lindwurmia thiuda for the specimen.[1]

Description

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Size comparison of Lindwurmia thiuda

Lindwurmia reached around 3 metres (9.8 ft) long when fully grown.

It has twenty-four cervical vertebrae and five pairs of premaxillary teeth.[1]

Classification

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Two different datasets were used to classify Lindwurmia. Vincent & Storrs (2019) found it to be the sister taxon to Anningasaura within Rhomaleosauridae.[1]

References

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  1. ^ a b c d e f Vincent, Peggy; Storrs, Glenn W. (2019-01-28). "Lindwurmia, a new genus of Plesiosauria (Reptilia: Sauropterygia) from the earliest Jurassic of Halberstadt, northwest Germany". The Science of Nature. 106 (1): 5. Bibcode:2019SciNa.106....5V. doi:10.1007/s00114-018-1600-y. ISSN 1432-1904. PMID 30689058. S2CID 59304744.
  2. ^ Brandes, T. (1912). "Plesiosaurus (Thaumatosaurus) aff. Megacephalo aus dem unteren Lias von Halberstadt". Nachrichten von der Königlichen Gesellschaft der Wissenschaften und der Georg-Augusts-Universität zu Göttingen, Mathematisch-Physikalische Klasse 1912: 594–598.
  3. ^ Brandes, T. (1914). "Plesiosauriden aus dem Unteren Lias von Halberstadt". Palaeontographica 61: 41–56.