A rare double-whammy in that we have 2 new megalodon papers published over the last few days. May well do a short thread on each of them later this week if followers would be interested. Many congrats to the authors!
Endothermic physiology of extinct megatooth sharks.
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Jun 2023 – Aug 2025Where it's discussed
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AI synopsis
What people are saying
The preference for scientific evidence is evident in posts emphasizing isotope analysis and body temperature estimates, with phrases like 'confirms' and 'new research,' reflecting high agreement and impact. The tone varies from technical in discussions about physiology to more casual comments about movies, but the overall emphasis on the study's significance indicates strong interest and deep engagement.
Most discussions are positive, supporting the idea that Megalodon was likely warm-blooded based on recent research, with many explicitly affirming the study's findings.
Posts show high interest, referencing scientific methods and implications, with several mentions of isotopic analyses and thermoregulation debates.
While some discussions reference specific scientific details like isotope analysis, overall engagement remains moderate, with some users expressing curiosity and support.
The discussions suggest significant impact, as many posts link the research to broader questions about Megalodon's physiology and extinction, emphasizing its importance.
Abstract in brief
- The study explores whether extinct megatooth sharks, specifically *Carcharocles megalodon*, were ectothermic (cold-blooded) or endothermic (warm-blooded), using geochemical methods like isotope analysis to gather evidence.
- Findings indicate that *Megalodon* likely maintained a warmer body temperature than its surrounding environment, supporting the idea that it was endothermic, which may have contributed to its large size and gigantism.
- The high metabolic costs associated with maintaining elevated body temperatures could have made *Megalodon* more vulnerable to extinction during the Pliocene, unlike some smaller, colder-blooded sharks that survived.]
Top posts
Most liked on X and BlueskyAncient megatooth sharks were giants. Isotope analysis of fossilized Otodus megalodon teeth shows the sharks were 7 °C warmer than the seawater they swam in, which was so energetically costly it could have contributed to their extinction. In PNAS: https://t.co/B4x3pIGHVU https://t.co/oIcmpcR1Xp
メガロドンは、温血動物(内温性)だった、という記事→. https://t.co/guK5opQ5ck 。「メガロドンの平均体温は27度で、現代のサメの平均体温である22度~26.6度より高い」と。論文はこちら(英語ですが無料)→ https://t.co/JUe4lDZyy9
L'étude d'émailoïde
◎海洋古生物の体温 ①中生代の海生爬虫類 ❶魚竜&首長竜:33〜41度 (https://t.co/DoRgS8vtVC) ❷海鰐 ⑴テレオサウルス科:27〜31度 ⑵メトリオリンクス科:29〜37度 (https://t.co/zGWBiDmYju) ❸モササウルス科:33〜36度 (https://t.co/VVIZxpoN1x) ②メガロドン:25〜30度 (https://t.co/w3G1eNYMUH)
All mentions
Estimating the Size of Megalodon: New Insights into Its Extent
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The Giant Killer Sperm Whale: Rival of Megalodon
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Megalodon Feeding Habits and Trophic Position Explained
Direct evidence of Megalodon feeding behavior is rare. This video explores the fossils of Megalodon's victims and examines trophic positions in marine food chains, revealing their significant role as apex predators…
Giant Pleistocene Armored Skink of Australia Expands Lizard Morphospace
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Megalodon Endothermy and Extinction Insights
The study explores whether *Carcharocles megalodon* was warm-blooded or cold-blooded using isotope analysis. Evidence suggests Megalodon maintained a warmer body temperature, which may have contributed to its gigantism…
Endothermic Physiology of Extinct Megatooth Sharks Unveiled
This study explores whether Megalodon was warm-blooded or cold-blooded, using isotope analysis. Findings suggest Megalodon maintained a warmer body temperature, indicating endothermy, which may have contributed to its…
@excalib51686983 @princesse_rasta @CestTerrifiant https://t.co/Erb7E5j0I5 https://t.co/4UK3N4BYRZ https://t.co/a7FVnE9Md9 Voici 3 études qui ont été validée en peer reviews avant publication. Maintenant envoie tes études scientifiques qui démentent la possibilité de l’existence même du megalodon ?
RT @V2manburu: ◎海洋古生物の体温 ①中生代の海生爬虫類 ❶魚竜&首長竜:33〜41度 (https://t.co/DoRgS8vtVC) ❷海鰐 ⑴テレオサウルス科:27〜31度 ⑵メトリオリンクス科:29〜37度 (https://t.co/zGWBiDmYj…
How Big Was Megalodon Really? https://t.co/2AMWqrGkjq via @YouTube
RT @V2manburu: ◎海洋古生物の体温 ①中生代の海生爬虫類 ❶魚竜&首長竜:33〜41度 (https://t.co/DoRgS8vtVC) ❷海鰐 ⑴テレオサウルス科:27〜31度 ⑵メトリオリンクス科:29〜37度 (https://t.co/zGWBiDmYj…
RT @V2manburu: ◎海洋古生物の体温 ①中生代の海生爬虫類 ❶魚竜&首長竜:33〜41度 (https://t.co/DoRgS8vtVC) ❷海鰐 ⑴テレオサウルス科:27〜31度 ⑵メトリオリンクス科:29〜37度 (https://t.co/zGWBiDmYj…
@meg82159 @theMeg_theLoch How big was Megaladon really? https://t.co/c0rYL8LT5Y?
How Big Was Megalodon Really? https://t.co/d77tjp7PYL via @YouTube
RT @V2manburu: ◎海洋古生物の体温 ①中生代の海生爬虫類 ❶魚竜&首長竜:33〜41度 (https://t.co/DoRgS8vtVC) ❷海鰐 ⑴テレオサウルス科:27〜31度 ⑵メトリオリンクス科:29〜37度 (https://t.co/zGWBiDmYj…
RT @V2manburu: ◎海洋古生物の体温 ①中生代の海生爬虫類 ❶魚竜&首長竜:33〜41度 (https://t.co/DoRgS8vtVC) ❷海鰐 ⑴テレオサウルス科:27〜31度 ⑵メトリオリンクス科:29〜37度 (https://t.co/zGWBiDmYj…
https://t.co/XYH84wW9fL
@MistrelofHorror Just about time for a movie about this monstrous whale that rivaled the Meg... https://t.co/rJQMKpQl2L
RT @isotopogrog:
RT @IGeociencias: Una nueva investigación geoquímica con isótopo de oxígeno confirma que el tiburón megalodón era de sangre caliente o más…
Una nueva investigación geoquímica con isótopo de oxígeno confirma que el tiburón megalodón era de sangre caliente o más exactamente regionalmente endotérmico, como algunos tiburones actuales. https://t.co/bvCD60E4JG
Una nueva investigación geoquímica con isótopo de oxígeno confirma que el tiburón megalodón era de sangre caliente o más exactamente regionalmente endotérmico, como algunos tiburones actuales. https://t.co/bvCD60E4JG
https://t.co/KBoGoEr85V
An Animal To Rival Megalodon? - The Giant Killer Sperm Whale Livyatan https://t.co/suexcjZrLO via @YouTube
An Animal To Rival Megalodon? - The Giant Killer Sperm Whale Livyatan https://t.co/652bxAFKt4 via @YouTube #Megalodon #TheMeg2 #MegShark #TheMegalodon #GiantSharks #ExtinctSharks #PrehistoricSharks #HugeSharks #Livyatan #LivyatanVsMegalodon #LivyatanMelvillei #rocksolidfossils
An Animal To Rival Megalodon? - The Giant Killer Sperm Whale Livyatan https://t.co/j2s5pRwI0f vía @YouTube
https://t.co/XBA39qXGGD
@kathleen_belew If you want nonfiction, here is an excellent paper written about one of the possible reasons for their demise. https://t.co/AT2GkEsusA
RT @isotopogrog:
How hot was The Meg? Great summary by @isotopogrog in @PNASNews on thermoregulation of the infamous #superpredator. https://t.co/DL0hzH2rig Original paper by Griffith's et al. https://t.co/67VPWS2JrV #ancientsharks #clumpedisotopes #sharkteeth #megalodon https://t.co/eAYGS8Fs1Q
RT @isotopogrog:
RT @isotopogrog:
RT @isotopogrog:
RT @isotopogrog:
RT @V2manburu: ◎海洋古生物の体温 ①中生代の海生爬虫類 ❶魚竜&首長竜:33〜41度 (https://t.co/DoRgS8vtVC) ❷海鰐 ⑴テレオサウルス科:27〜31度 ⑵メトリオリンクス科:29〜37度 (https://t.co/zGWBiDmYj…
Endothermic physiology of extinct megatooth sharks | PNAS https://t.co/g1LR77WOGG
Endothermic physiology of extinct megatooth sharks | PNAS https://t.co/EMr87fw1Oq #stableisotopes
PaleoPost: we finally have evidence that Otodus Megalodon (formerly Carcharodon) was warm-blooded! New research puts their mean temp at ~7°C warmer than the ambient seawater, which may explain their high trophic level and cosmopolitan distribution. https://t.co/wip582edLO
Endothermy in Otodus megalodon as a potention driver in its success & extinction. https://t.co/Ep0NkBc07U @ElasmoSociety @MA_Sharks @JeremyBRoberts @soFISHtication @MISS_Elasmo @PaleoSoc @SVP_vertpaleo
Endothermic physiology of extinct megatooth #sharks | Otodus #megalodon https://t.co/iP2Lr9u00k
Endothermic physiology of extinct megatooth sharks | PNAS https://t.co/pHkBJAp4UZ
Endothermic physiology of extinct megatooth sharks | PNAS https://t.co/pXUORPNZ2K
RT @V2manburu: ◎海洋古生物の体温 ①中生代の海生爬虫類 ❶魚竜&首長竜:33〜41度 (https://t.co/DoRgS8vtVC) ❷海鰐 ⑴テレオサウルス科:27〜31度 ⑵メトリオリンクス科:29〜37度 (https://t.co/zGWBiDmYj…
L'étude d'émailoïde
RT @NielsJdeWinter: Megalodon may have been (partially) warm-blooded. Nice study @PNASNews applying #clumped and stable #oxygen #isotopes o…
RT @PNASNews: Ancient megatooth sharks were giants. Isotope analysis of fossilized Otodus megalodon teeth shows the sharks were 7 °C warmer…
RT @PNASNews: Ancient megatooth sharks were giants. Isotope analysis of fossilized Otodus megalodon teeth shows the sharks were 7 °C warmer…
RT @PNASNews: Ancient megatooth sharks were giants. Isotope analysis of fossilized Otodus megalodon teeth shows the sharks were 7 °C warmer…
RT @DinosaurUni: Wait, what? Megalodon was "warm-blooded"?
RT @PNASNews: Ancient megatooth sharks were giants. Isotope analysis of fossilized Otodus megalodon teeth shows the sharks were 7 °C warmer…
RT @PNASNews: Ancient megatooth sharks were giants. Isotope analysis of fossilized Otodus megalodon teeth shows the sharks were 7 °C warmer…
RT @PNASNews: Ancient megatooth sharks were giants. Isotope analysis of fossilized Otodus megalodon teeth shows the sharks were 7 °C warmer…
Ancient megatooth sharks were giants. Isotope analysis of fossilized Otodus megalodon teeth shows the sharks were 7 °C warmer than the seawater they swam in, which was so energetically costly it could have contributed to their extinction. In PNAS: https://t.co/B4x3pIGHVU https://t.co/oIcmpcR1Xp
Warm-blooded mega sharks "Our results show that O. megalodon had an overall warmer body temperature compared with its ambient environment and other coexisting shark species" https://www.pnas.org/doi/10.1073/pnas.2218153120
RT @V2manburu: ◎海洋古生物の体温 ①中生代の海生爬虫類 ❶魚竜&首長竜:33〜41度 (https://t.co/DoRgS8vtVC) ❷海鰐 ⑴テレオサウルス科:27〜31度 ⑵メトリオリンクス科:29〜37度 (https://t.co/zGWBiDmYj…
RT @mickgriff02: We have a new paper out in @PNASNews today utilizing phosphate oxygen and clumped isotopes to infer endothermy in extinct…
RT @NielsJdeWinter: Megalodon may have been (partially) warm-blooded. Nice study @PNASNews applying #clumped and stable #oxygen #isotopes o…
Megalodon may have been (partially) warm-blooded. Nice study @PNASNews applying #clumped and stable #oxygen #isotopes on #megalodon teeth reveal higher than expected body temperatures
RT @paleont_kt: メガロドンは、温血動物(内温性)だった、という記事→. https://t.co/guK5opQ5ck 。「メガロドンの平均体温は27度で、現代のサメの平均体温である22度~26.6度より高い」と。論文はこちら(英語ですが無料)→ https:/…
RT @paleont_kt: メガロドンは、温血動物(内温性)だった、という記事→. https://t.co/guK5opQ5ck 。「メガロドンの平均体温は27度で、現代のサメの平均体温である22度~26.6度より高い」と。論文はこちら(英語ですが無料)→ https:/…
RT @paleont_kt: メガロドンは、温血動物(内温性)だった、という記事→. https://t.co/guK5opQ5ck 。「メガロドンの平均体温は27度で、現代のサメの平均体温である22度~26.6度より高い」と。論文はこちら(英語ですが無料)→ https:/…
RT @paleont_kt: メガロドンは、温血動物(内温性)だった、という記事→. https://t.co/guK5opQ5ck 。「メガロドンの平均体温は27度で、現代のサメの平均体温である22度~26.6度より高い」と。論文はこちら(英語ですが無料)→ https:/…
RT @paleont_kt: メガロドンは、温血動物(内温性)だった、という記事→. https://t.co/guK5opQ5ck 。「メガロドンの平均体温は27度で、現代のサメの平均体温である22度~26.6度より高い」と。論文はこちら(英語ですが無料)→ https:/…
RT @paleont_kt: メガロドンは、温血動物(内温性)だった、という記事→. https://t.co/guK5opQ5ck 。「メガロドンの平均体温は27度で、現代のサメの平均体温である22度~26.6度より高い」と。論文はこちら(英語ですが無料)→ https:/…
RT @paleont_kt: メガロドンは、温血動物(内温性)だった、という記事→. https://t.co/guK5opQ5ck 。「メガロドンの平均体温は27度で、現代のサメの平均体温である22度~26.6度より高い」と。論文はこちら(英語ですが無料)→ https:/…
メガロドンは、温血動物(内温性)だった、という記事→. https://t.co/guK5opQ5ck 。「メガロドンの平均体温は27度で、現代のサメの平均体温である22度~26.6度より高い」と。論文はこちら(英語ですが無料)→ https://t.co/JUe4lDZyy9
RT @mickgriff02: We have a new paper out in @PNASNews today utilizing phosphate oxygen and clumped isotopes to infer endothermy in extinct…
RT @mickgriff02: We have a new paper out in @PNASNews today utilizing phosphate oxygen and clumped isotopes to infer endothermy in extinct…
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
The megalodon shark had a significantly higher body temperature than previously thought. I hope this will not cause the respective trash movies ("cold-blooded killer") to be re-created. https://t.co/o1INGSDINF
RT @PaleonewsFrance: - Fais moi frissonner en deux mots - Mégalodon endotherme ! https://t.co/atiD40fBd5 Source: https://t.co/6t0WYHQVvX
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
◎海洋古生物の体温 ①中生代の海生爬虫類 ❶魚竜&首長竜:33〜41度 (https://t.co/DoRgS8vtVC) ❷海鰐 ⑴テレオサウルス科:27〜31度 ⑵メトリオリンクス科:29〜37度 (https://t.co/zGWBiDmYju) ❸モササウルス科:33〜36度 (https://t.co/VVIZxpoN1x) ②メガロドン:25〜30度 (https://t.co/w3G1eNYMUH)
RT @mickgriff02: We have a new paper out in @PNASNews today utilizing phosphate oxygen and clumped isotopes to infer endothermy in extinct…
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @TomHoltzPaleo: Endothermic physiology of extinct megatooth sharks | PNAS https://t.co/1A0sshtfnz
RT @mickgriff02: We have a new paper out in @PNASNews today utilizing phosphate oxygen and clumped isotopes to infer endothermy in extinct…
Endothermic physiology of extinct megatooth sharks | PNAS https://t.co/1A0sshtfnz
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @CooperPalaeo: A rare double-whammy in that we have 2 new megalodon papers published over the last few days. May well do a short thread…
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @CooperPalaeo: A rare double-whammy in that we have 2 new megalodon papers published over the last few days. May well do a short thread…
RT @CooperPalaeo: A rare double-whammy in that we have 2 new megalodon papers published over the last few days. May well do a short thread…
ARTÍCULO REFERENCIA (acceso abierto) Endothermic physiology of extinct megatooth sharks https://t.co/KkPKpN5drf vía @PNASNews
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
Endothermic physiology of extinct megatooth sharks | PNAS https://t.co/OkTUZcq86i
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @CooperPalaeo: A rare double-whammy in that we have 2 new megalodon papers published over the last few days. May well do a short thread…
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @josh_zimmt: Six years ago I asked a potential PhD advisor whether Megalodon was an endotherm or an ectotherm... While I didn't get an o…
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @CooperPalaeo: A rare double-whammy in that we have 2 new megalodon papers published over the last few days. May well do a short thread…
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
A rare double-whammy in that we have 2 new megalodon papers published over the last few days. May well do a short thread on each of them later this week if followers would be interested. Many congrats to the authors!
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @josh_zimmt: Six years ago I asked a potential PhD advisor whether Megalodon was an endotherm or an ectotherm... While I didn't get an o…
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @pantheo27705718: 史上最大のサメ「メガロドン」は温血動物だったことが判明 - GIGAZINE 論文フリー https://t.co/ewV3KUOBUS https://t.co/JNzo1ptcXN
RT @PaleonewsFrance: - Fais moi frissonner en deux mots - Mégalodon endotherme ! https://t.co/atiD40fBd5 Source: https://t.co/6t0WYHQVvX