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CONVOLOSAURUS

a basal ornithopod dinosaur from the Early Cretaceous of Texas, USA
Pronunciation:
Meaning: Flocking lizard
Author/s: Andrzejewski et al. (2019)
Synonyms: None known
First Discovery: Texas, USA
Discovery Chart Position: #1001

Convolosaurus marri

(Marr's Flocking Lizard)Etymology
Convolosaurus is derived from the Latin "convolare" (to flock) and the Greek "sauros" (lizard), referring to clusters of juvenile specimens found together at the dig site. The species epithet, marri, honours of Dr. Ray H. Marr who produced the Society of Vertebrate Paleontology videos "We are SVP" and "About the SVP Logo" posted on the SVP website (vertpaleo.org), and who is a strong proponent of students at Southern Methodist University (SMU).
ZooBank registry: urn:lsid:zoobank.org:act:468990B8-F35E-4165-8065-9FE0DA581D8A.
Discovery
The first remains of Convolosaurus were discovered in the Twin Mountains Formation (Trinity Group) at Proctor Lake, Comanche County, Texas, USA, by James "Rusty" Branch in May 1985.
The holotype (SMU 72834) is a skull and partial articulated skeleton with 9 neck vertebrae, 15 back vertebrae, 6 hip vertebrae, 23 tail vertebrae, partial shoulder girdles, a left arm and partial left hand, partial right upper arm, pelvic girdle, parts of both thighs and shins, and a partial left calf.
As of 2019, at least 29 individuals from "Camp Quarry" and "North Quarry" along the southeast shores of Proctor Lake (totalling 488 specimens) have been referred to Convolosaurus. While the holotype is the largest among them, measuring approximately 2.5-3 m in length, it does not represent a full grown adult.
Preparators
R. Beauford, W.D. Downs, A. Konnerth, D. Muldunado, K.D. Newman, V. Yarborough, et al.
Estimations
Timeline:
Era: Mesozoic
Epoch: Early Cretaceous
Stage: Aptian
Age range: 125 mya
Stats:
Est. max. length: ?
Est. max. hip height: ?
Est. max. weight: ?
Diet: Herbivore
References
• Winkler DA, Murry PA, Jacobs LL, Downs WR, Branch JR and Trudel P (1988) "The Proctor Lake dinosaur locality, Lower Cretaceous of Texas". Hunteria, 2(5): 1-8.
• Winkler DA and Murry PA (1989) "Paleoecology and hypsilophodontid behavior at the Proctor Lake dinosaur locality (Early Cretaceous), Texas". Geological Society of America Special Paper, 238: 55-61. DOI: 10.1130/SPE238-p55.
• Andrzejewski KA, Winkler DA and Jacobs LL (2019) "A new basal ornithopod (Dinosauria: Ornithischia) from the Early Cretaceous of Texas". PLoS ONE, 14(3): e0207935. DOI: 10.1371/journal.pone.0207935.
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To cite this page:
Atkinson, L. "CONVOLOSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 06th Mar 2026.
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