Cy Marchant
@slvrhwk.bsky.social
◇ Paleobiology student ◇ Science illustration dilettante ◇ Osteographer ◇ Ancient life reconstructions ◇ PhyloPic contributor ◇ 🦕🦖🦎 ◇ he/him ◇
Reconstructed skeleton of Spicomellus ('spiky collar'), certainly one of the most unusual dinosaurs known. Found in the mid-Jurassic El Mers Group of Morocco, it is also the oldest definitive ankylosaur.
September 8, 2025 at 4:21 PM
Reconstructed skeleton of Spicomellus ('spiky collar'), certainly one of the most unusual dinosaurs known. Found in the mid-Jurassic El Mers Group of Morocco, it is also the oldest definitive ankylosaur.
When including remains described in 1977 by A. Perle (which unfortunately could not be located for the 2025 publication), we get a reasonable picture of much of this dinosaur’s skull.
June 16, 2025 at 10:31 PM
When including remains described in 1977 by A. Perle (which unfortunately could not be located for the 2025 publication), we get a reasonable picture of much of this dinosaur’s skull.
Khankhuuluu is somewhat ‘transitional’ in both size and anatomy between the earlier tyrannosauroids and later, more familiar, tyrannosaurids like Tyrannosaurus itself.
June 16, 2025 at 10:31 PM
Khankhuuluu is somewhat ‘transitional’ in both size and anatomy between the earlier tyrannosauroids and later, more familiar, tyrannosaurids like Tyrannosaurus itself.
Khankhuuluu ("dragon prince") is a recently named tyrannosauroid from Mongolia's Bayanshiree Formation. 🦖
This reconstruction includes the holotype (white) and a slightly smaller referred specimen (pink). Both scale bars = 1 m.
This reconstruction includes the holotype (white) and a slightly smaller referred specimen (pink). Both scale bars = 1 m.
June 16, 2025 at 10:31 PM
Khankhuuluu ("dragon prince") is a recently named tyrannosauroid from Mongolia's Bayanshiree Formation. 🦖
This reconstruction includes the holotype (white) and a slightly smaller referred specimen (pink). Both scale bars = 1 m.
This reconstruction includes the holotype (white) and a slightly smaller referred specimen (pink). Both scale bars = 1 m.
To those who celebrate...
#VelociraptorAwarenessDay
#VelociraptorAwarenessDay
April 18, 2025 at 8:23 PM
To those who celebrate...
#VelociraptorAwarenessDay
#VelociraptorAwarenessDay
Happy I was able to assist at the St. George 'Substation Quarry' last week with others from the @imnh208.bsky.social! My personal highlight was finding a decent theropod tooth among several fish scale fragments. 🦖
March 31, 2025 at 10:00 PM
Happy I was able to assist at the St. George 'Substation Quarry' last week with others from the @imnh208.bsky.social! My personal highlight was finding a decent theropod tooth among several fish scale fragments. 🦖
If you see this QRP with your animal painting:
Semi-stylized watercolor + ink sketch of a pygmy squid! 🦑
Semi-stylized watercolor + ink sketch of a pygmy squid! 🦑
March 12, 2025 at 2:57 AM
If you see this QRP with your animal painting:
Semi-stylized watercolor + ink sketch of a pygmy squid! 🦑
Semi-stylized watercolor + ink sketch of a pygmy squid! 🦑
If you see this, post a skeleton
February 23, 2025 at 4:53 AM
If you see this, post a skeleton
Two tiny and fragmentary new dinosaurs, both with big implications for dinosaur research!
Ahvaytum, an early sauropodomorph, is one of the oldest dinosaurs from Laurasia (1, 3).
Archaeocursor, a basal ornithischian, is among the oldest Asian species in this group (2, 4).
Ahvaytum, an early sauropodomorph, is one of the oldest dinosaurs from Laurasia (1, 3).
Archaeocursor, a basal ornithischian, is among the oldest Asian species in this group (2, 4).
January 9, 2025 at 2:00 AM
Two tiny and fragmentary new dinosaurs, both with big implications for dinosaur research!
Ahvaytum, an early sauropodomorph, is one of the oldest dinosaurs from Laurasia (1, 3).
Archaeocursor, a basal ornithischian, is among the oldest Asian species in this group (2, 4).
Ahvaytum, an early sauropodomorph, is one of the oldest dinosaurs from Laurasia (1, 3).
Archaeocursor, a basal ornithischian, is among the oldest Asian species in this group (2, 4).
As a fun addition, these three dinosaurs (Yuanyanglong, Baiyinosaurus, and Lishulong) known from associated skulls and postcrania possess curiously small heads in relation to their bodies, compared to related taxa. (10/11)
January 3, 2025 at 12:17 AM
As a fun addition, these three dinosaurs (Yuanyanglong, Baiyinosaurus, and Lishulong) known from associated skulls and postcrania possess curiously small heads in relation to their bodies, compared to related taxa. (10/11)
Not every dinosaur can be named based on complete skeletons, but some of these new taxa stand out as particularly fragmentary; the ornithischians Tietasaura and Archaeocursor are both known only from partial femurs! (9/11)
January 3, 2025 at 12:17 AM
Not every dinosaur can be named based on complete skeletons, but some of these new taxa stand out as particularly fragmentary; the ornithischians Tietasaura and Archaeocursor are both known only from partial femurs! (9/11)
Stegosaurs are quite rare, and 2024 brought three! These include the early Baiyinosaurus which preserves cranial material, Yanbeilong, one of the youngest definitive stegosaurs, and Thyreosaurus, whose bizarre dermal plates show how little we know about the earliest armored dinosaurs. (8/11)
January 3, 2025 at 12:17 AM
Stegosaurs are quite rare, and 2024 brought three! These include the early Baiyinosaurus which preserves cranial material, Yanbeilong, one of the youngest definitive stegosaurs, and Thyreosaurus, whose bizarre dermal plates show how little we know about the earliest armored dinosaurs. (8/11)
2024 brought some particularly small dinosaurs, including two troodontids (Harenadraco and Hypnovenator), an oviraptorosaur (Yuanyanglong), a 'silesaurid' (Gondwanax), and the diminutive basal ornithischian Archaeocursor. (7/11)
January 3, 2025 at 12:17 AM
2024 brought some particularly small dinosaurs, including two troodontids (Harenadraco and Hypnovenator), an oviraptorosaur (Yuanyanglong), a 'silesaurid' (Gondwanax), and the diminutive basal ornithischian Archaeocursor. (7/11)
None of the 2024 dinosaurs can contend for the title of "Biggest", but three large sauropods stand out; Sidersaura is one of the largest rebbachisaurids, Ardetosaurus, with its whiplike tail, is fairly long, and Jingiella, as a mamenchisaurid, is unsurprisingly tall. (6/11)
January 3, 2025 at 12:17 AM
None of the 2024 dinosaurs can contend for the title of "Biggest", but three large sauropods stand out; Sidersaura is one of the largest rebbachisaurids, Ardetosaurus, with its whiplike tail, is fairly long, and Jingiella, as a mamenchisaurid, is unsurprisingly tall. (6/11)
2024 brought the description of four coeval dinosaur 'pairs' (all in separate publications): Chakisaurus + Sidersaura from the Huincul Fm., Sasayamagnomus + Hypnovenator from the Ohyamashimo Fm., Datai + Gandititan from the Zhoutian Fm., and Titanomachya + Koleken from the La Colonia Fm. (5/11)
January 3, 2025 at 12:17 AM
2024 brought the description of four coeval dinosaur 'pairs' (all in separate publications): Chakisaurus + Sidersaura from the Huincul Fm., Sasayamagnomus + Hypnovenator from the Ohyamashimo Fm., Datai + Gandititan from the Zhoutian Fm., and Titanomachya + Koleken from the La Colonia Fm. (5/11)
China was the country with the most new dinosaurs in 2024, with 11 new genera being described! As such, it reclaims this title from 2021. In second place for 2024 is Argentina, with seven genera. (4/11)
January 3, 2025 at 12:17 AM
China was the country with the most new dinosaurs in 2024, with 11 new genera being described! As such, it reclaims this title from 2021. In second place for 2024 is Argentina, with seven genera. (4/11)
41 non-avian dinosaur genera were announced in 2024, running the gamut of dinosaurian diversity (missing pachycephalosaurs)! These included taxa described from five continents (Africa, Asia, Europe, North America, and South America) and all three time periods, with diverse sizes and bauplans. (3/11)
January 3, 2025 at 12:17 AM
41 non-avian dinosaur genera were announced in 2024, running the gamut of dinosaurian diversity (missing pachycephalosaurs)! These included taxa described from five continents (Africa, Asia, Europe, North America, and South America) and all three time periods, with diverse sizes and bauplans. (3/11)
2024 was a big year for dinosaur paleontology! 🦕 Here is a brief review of most* of the new dinosaurs described this year, and some interesting highlights. (1/🧵)
#SciArt #paleontology #dinosaur
#SciArt #paleontology #dinosaur
January 3, 2025 at 12:17 AM
2024 was a big year for dinosaur paleontology! 🦕 Here is a brief review of most* of the new dinosaurs described this year, and some interesting highlights. (1/🧵)
#SciArt #paleontology #dinosaur
#SciArt #paleontology #dinosaur
Lishulong ("chestnut tree dragon") is a recently described 'pro-sauropod' from the Lufeng Formation of China.
While only one of many sauropodomorphs from this formation, Lishulong is by far the largest. It may be one of the largest bipedal animals ever!
While only one of many sauropodomorphs from this formation, Lishulong is by far the largest. It may be one of the largest bipedal animals ever!
December 14, 2024 at 11:03 PM
Lishulong ("chestnut tree dragon") is a recently described 'pro-sauropod' from the Lufeng Formation of China.
While only one of many sauropodomorphs from this formation, Lishulong is by far the largest. It may be one of the largest bipedal animals ever!
While only one of many sauropodomorphs from this formation, Lishulong is by far the largest. It may be one of the largest bipedal animals ever!
Welcoming Nipponopterus mifunensis, the newest azhdarchid and the first named pterosaur from Japan! 🗾
The holotype specimen is a single partial vertebra belonging to an immature individual (hence the small size).
The holotype specimen is a single partial vertebra belonging to an immature individual (hence the small size).
November 16, 2024 at 10:37 PM
Welcoming Nipponopterus mifunensis, the newest azhdarchid and the first named pterosaur from Japan! 🗾
The holotype specimen is a single partial vertebra belonging to an immature individual (hence the small size).
The holotype specimen is a single partial vertebra belonging to an immature individual (hence the small size).
Post a picture you took (no description) to bring some zen to the timeline
November 16, 2024 at 6:05 AM
Post a picture you took (no description) to bring some zen to the timeline
In case anyone's struggling to visualize a ~14 meter ankylosaur . . . it's big.
November 12, 2024 at 2:21 AM
In case anyone's struggling to visualize a ~14 meter ankylosaur . . . it's big.
Huaxiazhoulong shouwen, a new ankylosaurid from China's Late Cretaceous Tangbian Formation. At more than 5 meters long, it is one of the largest known Chinese ankylosaurs.
November 10, 2024 at 7:38 PM
Huaxiazhoulong shouwen, a new ankylosaurid from China's Late Cretaceous Tangbian Formation. At more than 5 meters long, it is one of the largest known Chinese ankylosaurs.
I love this bird! I don't have as much time as I want for traditional drawing, but I really enjoyed illustrating this white-throated toucan for a class last month.
November 9, 2024 at 2:34 AM
I love this bird! I don't have as much time as I want for traditional drawing, but I really enjoyed illustrating this white-throated toucan for a class last month.
🎉Velociraptor, Saurornithoides, and Oviraptor turn 💯 today!
On November 7, 1924, Henry F. Osborn published his description of these three small theropods. 🦖
On November 7, 1924, Henry F. Osborn published his description of these three small theropods. 🦖
November 8, 2024 at 5:30 AM
🎉Velociraptor, Saurornithoides, and Oviraptor turn 💯 today!
On November 7, 1924, Henry F. Osborn published his description of these three small theropods. 🦖
On November 7, 1924, Henry F. Osborn published his description of these three small theropods. 🦖