PBDB Collection

Hoyada de los esfenodontes 1, La Buitrera (Cretaceous of Argentina)

Also known as He1, La Buitrera Paleontological Area, LBPA

Where: Río Negro, Argentina (39.6° S, 68.7° W: paleocoordinates 46.7° S, 44.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Upper Member (Candeleros Formation), Early/Lower Cenomanian (99.6 - 93.5 Ma)

• upper member of formation

•"it is now considered that the Candeleros Formation is wholly Cenomanian, likely lower Cenomanian (Garrido 2010)" (Rougier et al. 2011)

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; lithified, massive, red sandstone

• "rapid overbank flooding events"

• "massive red sandstones"

Size class: macrofossils

Collected by S. Apesteguía

Collection methods: quarrying, mechanical,

Primary reference: S. Apesteguía and F. E. Novas. 2003. Large Cretaceous sphenodontian from Patagonia provides insight into lepidosaur evolution in Gondwana. Nature 425:609-612 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 225915: authorized by Matthew Carrano, entered by Matthew Carrano on 07.06.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Reptilia
Eosuchia - Sphenodontidae	"Priosphenodon avelasi n. gen. n. sp." = Kaikaifilusaurus calvoi "Priosphenodon avelasi n. gen. n. sp." = Kaikaifilusaurus calvoi Simon and Kellner 2003 lepidosaur MPCA 300 - holotype (partially articulated, adult skeleton) and referred specimens: MPCA 301 (a juvenile incomplete skeleton), MPCA 302 (postcranial isolated remains) and MPCA 303 (a partially articulated adult skeleton). More than a hundred uncatalogued specimens, including isolated elements and complete skeletons, remain unprepared.
Loricata -	Araripesuchus buitreraensis n. sp.⁴ Araripesuchus buitreraensis n. sp.⁴ Pol and Apesteguía 2005 crocodilian MPCA-PV 235
Theropoda - Dromaeosauridae	Buitreraptor gonzalezorum n. gen. n. sp.³ Buitreraptor gonzalezorum n. gen. n. sp.³ Makovicky et al. 2005 maniraptoran MPCA 245, 238, 471D
Theropoda - Alvarezsauridae	Alnashetri cerropoliciensis n. gen. n. sp.² Alnashetri cerropoliciensis n. gen. n. sp.² Makovicky et al. 2012 coelurosaur Holotype MPCA-477: partial left femur, distal portions of left and right tibiae, right fibula, proximal tarsals of both ankles, a nearly complete right metatarsus, proximal and distal parts of the left metapodials, left pedal digit III
Pterosauria -	Pterosauria indet.² Pterosauria indet.² Kaup 1834 pterosaur
Squamata -	Najash rionegrina n. gen. n. sp.¹ Najash rionegrina n. gen. n. sp.¹ Apestiguía and Zaher 2006 snake
Mammalia
Meridiolestida -	Cronopio dentiacutus n. gen. n. sp.⁵ Cronopio dentiacutus n. gen. n. sp.⁵ Rougier et al. 2011 mammal MPCA 454

¹Apestiguía and Zaher 2006; ²Makovicky et al. 2012; ³Makovicky et al. 2005; ⁴Pol and Apesteguía 2005; ⁵Rougier et al. 2011