An Ultimate Guide to Tanystropheus: The Long-Necked

Leave a comment / / Updated on: 19th October 2023

NameTanystropheusDietCarnivorous
Name MeaningLong-necked oneHeightN/A
PronunciationTan-ee-stro-fee-usLength5 or 6 meters (16.4 to 20 feet)
EraMesozoic EraTriassicWeight32.9 to 74.8 kgs (72.5 to 164.9 lbs)
ClassificationReptilia, Tanystropheidae,‭ & TanystropheusLocationEurope

Tanystropheus Pictures

Tanystropheus close-up | CoreyFord via Getty Images

The Tanystropheus

Gage Beasley Prehistoric's Tanystropheus Concept
Gage Beasley Prehistoric’s Tanystropheus Concept

The Triassic Epoch, spanning approximately 50 million years, marked a turning point in the development and evolution of many species that claimed prehistoric Earth as their home. 

While this period helped already-existing creatures evolve, it was also a time for new creatures to be born. 

Following the Permian mass extinction, as the continents drifted further apart and the oceans changed constantly, the Triassic Epoch testified to the resilience of the other creatures that survived the extinction that wiped so many species off the face of the prehistoric Earth.

 One of the many creatures that thrived during the Triassic was the Tanystropheus, a unique creature that embodied the diversity that once graced our planet.

One of the first traces of the enigmatic Tanystropheus was uncovered from the layers of Earth’s history in the early 20th century.

Tanystropheus | estt via Getty Images

 The fossilized remains of this intriguing reptile were discovered in the Middle Triassic sediments of Monte San Giorgio, a UNESCO World Heritage site located on the border between Switzerland and Italy. 

The significance of this discovery cannot be overstated, as it offered a glimpse into a world that existed approximately 242 million years ago during the Middle Triassic Period.

The first described Tanystropheus specimens were found in the mid-19th century in Germany and Poland

Our attempts to completely understand the Tanystropheus, veiled in the mists of antiquity, fail because of its habits, behaviors, and even the limitations of its physiology.

 However, based on the expert conclusions concerning this creature, this article provides several facts about the Tanystropheus that give us a glimpse into its life in the Triassic Epoch.

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Physical Characteristics

Gage Beasley Prehistoric’s Tanystropheus Size Comparison Chart

One of the most intriguing features of the Tanystropheus was its proportions.

 The intrigue was not concerning the creature’s weight but rather its length.

 All the different species of the Tanystropheus were long, some longer than others, but usually ranging between 16.4 and 20 feet.

 Despite their length, this creature did not weigh much, ranging between 72.5 to 164.9 pounds.

 The neck of the Tanystropheus is a prime example of evolutionary adaptation.

Stretching up to six times the length of its body, this elongated neck is a testament to the remarkable flexibility and diversity that natural selection can produce.

Tanystropheus was a carnivorous semi-aquatic marine reptile that lived in Europe and the Middle East during the Triassic Period. | CoreyFord via Getty Images

 Composed of numerous vertebrae, the Tanystropheus’ neck defies conventional expectations of reptilian anatomy, challenging scientists to unravel its purpose and function.

The creature’s neck comprised most of its length and around 13 cervical vertebrae.

This unusual anatomy allowed for a remarkable range of motion, enabling the Tanystropheus to navigate its environment in ways that are quite unlike any other creature.

Another interesting feature of this creature is its skull, which varied across species.

The skull of one of the recognized species, the Tanystropheus longobardicus, was triangular from the side and top, ending in a narrow snout. 

The toothed bone at the tip of its snout possessed six conical teeth. 

A 3D printed skull model based on a digital reconstruction of PIMUZ T 2790, the holotype of Tanystropheus hydroides. | Fanboyphilosopher (Neil Pezzoni) via Wikipedia (CC BY-SA 4.0)

On the other hand, its maxilla had around 14 or 15 individual teeth and according to experts, this species had heterodont teeth.

 The Tanystropheus hydroides had a broader and flatter skull than the Tanystropheus longobardicus but also possessed six premaxilla teeth which were large, fang-like and interlocked to form a fish trap. 

This species maxilla also had around 15 teeth increasing in size until the eighth.

While its elongated neck was undoubtedly a distinctive trait, it provided the foundation for its movement and lifestyle. 

The torso of the Tanystropheus is a testament to its adaptability and versatility. 

Where does the torso end? | CoreyFord via Getty Images

The torso played a critical role in the creature’s locomotion and survival by anchoring the elongated neck and supporting the limbs. 

The tail of the Tanystropheus is another fascinating aspect of its anatomy.

 While not as elongated as its neck, the tail served a crucial purpose in the creature’s life.

 In many ways, the tail functioned as a counterbalance to the extended neck, aiding in maintaining stability and control during various activities.

 Its length and shape indicated that it could have been used as a rudder or fin, helping the Tanystropheus maneuver through the water with precision.

Habitat and Distribution

During the Triassic Period, the Earth’s landmasses were arranged differently from how they are today. 

The continents were grouped in a supercontinent called Pangaea, and the Tethys Ocean separated parts of Pangaea. 

The fossil record of the Tanystropheus is primarily found in what is now Europe, specifically in regions that were part of the ancient Tethys Ocean.

Fossils have been discovered in places like Switzerland, Italy, and Germany. 

These locations were situated along the coastlines of the Tethys Ocean during the Triassic Period.

The first fossils of this creature to be discovered and accurately described were found in Germany and Poland. Aside from the mentioned locations, other fossils have been found in France, Romania, China, etc.

The first phase of the Tethys Ocean’s forming: the (first) Tethys Sea starts dividing Pangaea into two supercontinents, Laurasia and Gondwana. | Lennart Kudling via Wikipedia (CC BY 3.0)

The Tanystropheus’ way of life is debatable; several studies have favored the species’ either aquatic or terrestrial way of life.

Despite the long-standing debate, many experts believe the creature was a semi-aquatic reptile: meaning that while it primarily inhabited aquatic environments such as coastal and shallow marine areas, it likely had some interactions with both aquatic and terrestrial habitats. 

Its long, slender neck and body adaptations suggest it was well adapted for life in the water, allowing it to hunt for aquatic prey such as fish and squid.

 However, its body structure and limb adaptations also suggest some level of terrestrial capability, possibly for nesting, basking, or moving between different bodies of water.

Behavior and Diet

Skull of Tanystropheus longobardicus | Photo via A new phylogenetic hypothesis of Tanystropheidae (Diapsida, Archosauromorpha) and other “protorosaurs”, and its implications for the early evolution of stem archosaurs. (Speckman, Stephan N.F., et al., 2021) (CC BY 4.0)

Determining the social behavior of extinct creatures is a complex task, often relying on indirect evidence from fossil records.

In the case of the Tanystropheus, researchers have yet to uncover definitive proof of its social interactions. 

Fossil discoveries have been predominantly solitary individuals, suggesting a more solitary lifestyle.

However, some experts propose that the individuals likely exhibited gregarious behavior during specific life stages or in response to environmental factors.

Coastal regions where these reptiles lived could have experienced seasonal changes, leading to congregations of individuals during certain times of the year, such as for breeding or migration.

Life reconstruction of T. longobardicus hunting from the seashore | Nobu Tamura via Spinops (CC BY-SA 4.0)

The reproductive habits of the Tanystropheus remain a mystery. 

Like many aspects of its behavior, speculation is based on limited fossil evidence.

 It is plausible that breeding gatherings took place, resembling the nesting colonies seen in contemporary marine reptiles like sea turtles based on the assumption that these reptiles did display gregarious behavior throughout particular life stages.

Communication among Tanystropheus individuals, if it occurred, likely involved visual cues and possibly vocalizations. 

Given their elongated necks, they might have used body postures and movements to convey information to each other.

A large morphotype (T. hydroides) specimen missing only the skull and a portion of the neck | Fanboyphilosopher (Neil Pezzoni) via Wikipedia (CC BY 4.0)

These cues could have played a role in establishing dominance, attracting mates, or coordinating group movements if they exhibited any form of social structure.

Although much discussion has been over the Tanystropheus’ diet, most recent research classifies it as a piscivorous (fish-eating) reptile. 

The teeth at the front of the snout are long, conical, and interlocking, likely serving as an adaptation for catching aquatic prey. 

Other evidence for a piscivorous diet includes discovering fish scales and hooklets from cephalopod tentacles in the stomach area of some species. 

While on land, some experts believe the Tanystropheus’ diet was slightly different. Some species possessed tricuspid teeth at the back of the jaw, largely uncommon in reptiles, and an adaptation for gripping insects and smaller animals. 

Life Cycle

Tanystropheus was a marine predatory reptile that lived in the Triassic Seas of Europe and the Middle East. | CoreyFord via Getty Images

The life of a Tanystropheus began after eggs were laid on the shores of ancient seas or in the lush vegetation that bordered the water’s edge.

The precise details of its hatching remain a mystery. 

Still, like many reptiles, the hatchlings likely emerged from their eggs with a fully developed set of instincts, enabling them to navigate their surroundings and forage for sustenance. 

As hatchlings emerged from their eggs, they embarked on a perilous journey through the world of the Triassic.

Though small compared to their adult counterparts, these juveniles possessed the characteristic elongated neck that would eventually set them apart.

Life restoration of Tanystropheus in the water, from Renesto and Saller (2018) | Photo via Evidences for a semi aquatic life style in the Triassic diapsid reptile Tanystropheus. (CC BY-SA 4.0)

During this phase of their life, juveniles likely faced numerous challenges from predators, environmental shifts, and resource competition.

Tanystropheus had a moderate development rate, as shown by histological sampling.

With time, it transitioned into adulthood.

Reproduction in Tanystropheus would have been a crucial phase of their life cycle. Mating likely occurred in or near water, and females might have laid their eggs in well-protected locations to increase the chances of their offspring’s survival. 

However, due to the scarcity of direct fossil evidence, the intricacies of their reproductive behavior remain largely speculative.

Evolution and History

Tanystropheus close-up | CoreyFord via Getty Images

The Tanystropheus first emerged during the Middle Triassic Period, approximately 242 million years ago. 

This was when Earth’s landscapes and ecosystems vastly differed from what we know today.

At this point in history, the supercontinent Pangaea dominated the planet, and arid conditions and shallow marine environments marked the climate. 

It was within these waters that the Tanystropheus made its appearance.

Despite its intriguing adaptations, the Tanystropheus poses a significant evolutionary puzzle.

Its closest relatives are not well-documented, making it difficult to trace its lineage accurately. 

Some scientists believe it could be related to the archosaur lineage, which included crocodiles and birds. 

Casts of complete skeletons of Tanystropheus longobardicus preserving skulls | Tommy via Flickr (CC BY 2.0)

However, a conclusive placement within the evolutionary tree remains challenging due to the scarcity of fossils and the unique combination of traits exhibited by the Tanystropheus.

The Tanystropheus belongs to the order of reptiles known as the Tanystropheidae.

 Within this family, it is classified under the genus Tanystropheus

The genus name is derived from the Greek words tanos, meaning long; strophos, meaning “twist” or “bend.”

This name aptly describes the reptile’s most striking feature: an extraordinarily elongated neck that was longer than its body and tail combined. 

Understanding the ecological role of the Tanystropheus requires careful consideration of its anatomy and environment. 

The Tanystropheus likely occupied a unique niche in the ecosystem of its time, playing a role in regulating the populations of aquatic organisms and contributing to the overall balance of its ecosystem.

Interactions with Other Species

Two Tanystropheus with a school of fish | CoreyFord via Getty Images

One of the most intriguing aspects of the Tanystropheus’ interactions with other species is its potential diet. 

While its elongated neck might suggest that it primarily fed on fish and other aquatic creatures, there is an ongoing debate among paleontologists about its feeding habits.

Some theories propose that Tanystropheus may have used its long neck to snatch prey from trees along the shoreline or even on land. 

This raises questions about the species it might have interacted with as predator and prey.

The Tanystropheus likely faced numerous threats and predators in the complex world of ancient ecosystems.

Artwork of Tanystropheus hydroides being bitten | Photo via Fossil Wiki

Larger aquatic reptiles, such as ichthyosaurs and large crocodile-like creatures, could have posed a danger to the Tanystropheus due to its relatively slender build.

The presence of these predators could have influenced the Tanystropheus’ behavior and habitat preferences, potentially leading to shifts in its distribution and interactions with other species. 

The Tanystropheus is believed to have inhabited coastal regions and shallow marine environments.

Its unique body structure suggests that it had a specialized ecological niche. 

The Tanystropheus may have shared its space with various marine organisms, including fish, mollusks, and other reptiles in these habitats.

Cultural Significance

Modelled Tanystropheus skeleton | Ghedoghedo via Wikipedia (CC BY-SA 3.0)

The discovery of Tanystropheus fossils sparked immense curiosity among paleontologists and evolutionary biologists. 

The  Tanystropheus’ unique body structure, characterized by an extremely long neck and a relatively short body, raised questions about its lifestyle, behavior, and ecological niche.

The study of the Tanystropheus has contributed to our understanding of evolution, adaptation, and the diversity of life forms that existed millions of years ago. 

The unusual appearance of the Tanystropheus has made it a subject of fascination for artists and illustrators.

 Imagining the creature’s appearance and behavior based on skeletal remains has led to various artistic interpretations.

 From scientific reconstructions in academic papers to vivid illustrations in popular science books, the Tanystropheus has been a muse for artists attempting to recreate prehistoric landscapes and creatures.

Tanystropheus | CoreyFord via Getty Images

The Tanystropheus has become an educational tool to teach about evolution, ancient ecosystems, and the scientific process.

Museums and educational institutions often use fossil specimens as exhibits to engage visitors and students.

 Its unusual body structure prompts discussions about adaptation, survival strategies, and the interplay between form and function in organisms. 

The Tanystropheus’ peculiar anatomy has led to scientific debates and ongoing research.

Discussions about how it moved, fed, and interacted with its environment have fueled research into biomechanics, ecology, and the evolution of reptiles.

These debates stimulate critical thinking and the advancement of scientific knowledge.

Conclusion

In the intricate tapestry of prehistoric life, the Tanystropheus stands as an enigmatic symbol of adaptation and diversity during the Middle Triassic Epoch. 

With its iconic elongated neck and unique body structure, this reptile has intrigued scientists, artists, and enthusiasts alike. 

Its fossil remains, found primarily in regions once part of the ancient Tethys Ocean, have provided a window into the world 240 million years ago.

Through scientific investigation, imaginative reconstructions, and educational outreach, the Tanystropheus has left an indelible mark on our understanding of evolution, ecology, and the dynamic history of life on Earth.

From its role as an artistic muse to its significance in scientific discourse and research, the Tanystropheus reminds us of the wonder and complexity that ancient creatures bring to our cultural and scientific narratives.

FAQs

How did Tanystropheus reproduce?

The specifics of Tanystropheus’ reproductive behavior remain speculative due to limited direct fossil evidence.

 Mating likely occurred in or near water, and females may have laid their eggs in well-protected locations to enhance the chances of offspring survival. 

While social behavior during reproduction is debated, it’s possible that breeding gatherings took place, similar to nesting colonies observed in modern marine reptiles like sea turtles.

Are there any modern animals with similar traits to Tanystropheus?

While there are no direct descendants of the Tanystropheus in the modern world, certain aspects of its anatomy and adaptations can be likened to features in contemporary species. 

The elongated neck of some aquatic birds, such as herons, resembles Tanystropheus’ unique neck structure. 

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