A new baenid, Edowa zuniensis gen. et sp. nov., and other fossil turtles from the Upper Cretaceous Moreno Hill Formation (Turonian), New Mexico, USA

Adrian, Brent; Smith, Heather F.; Kelley, Kara; Wolfe, Douglas G.

doi:10.1016/j.cretres.2022.105422

Cited by 4 publications

(7 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…antiqua and E. zuniensis . These findings support previous studies that have described a “ Plesiobaena ‐grade” of derived baenid taxa that falls outside of Palatobaeninae (Adrian et al, 2023; Brinkman, 2003). The analysis also revealed Ce.…”

Section: Discussionsupporting

confidence: 91%

“…is among the best sampled Campanian baenids, and has been reconstructed variably as either a basal baenodd or an early representative of the derived Palatobaeninae clade, along with the younger Palatobaena spp ., Cedrobaena spp., and Gamerabaena sonsalla Lyson & Joyce, 2010 from the Maastrichtian and Paleocene (Gaffney, 1972; Brinkman, 2003; Lyson & Joyce, 2009a, 2009b, 2010). The recent discovery of a “ Plesiobaena ‐grade” species from the Turonian Moreno Hill Fm., Edowa zuniensis Adrian, Smith, Kelley, & Wolfe, 2023, demonstrates an early origin of this lineage. Like many other baenid taxa, Pl.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A well‐preserved cranium from the Judith River Formation (Montana, USA) reveals the inner ear and neuroanatomy of a Campanian baenid turtle

Smith

Berg

Adrian

2023

The Anatomical Record

Self Cite

View full text Add to dashboard Cite

A cranium belonging to a baenid turtle was recently recovered from the lower half of the Judith River Formation, Montana. Badlands Dinosaur Museum (BDM) 004 is a well‐preserved partial cranium that includes the posterior cranial vault, cranial base, and otic capsules. Based on diagnostic characters, the skull can be attributed to Plesiobaena antiqua, which has been previously reported from the Judith River Formation. It also shares with palatobaenines projecting posterior processes of the tubercula basioccipitale and a prominent condylus occipitalis with a deep central pit, demonstrating variation within the Pl. antiqua hypodigm. In a phylogenetic analysis, an operational taxonomic unit of BDM 004 was positioned within Baenodda in an unresolved polytomy with Pl. antiqua, Edowa zuniensis, Palatobaeninae, and Eubaeninae. Microcomputed tomographic (μCT) scans revealed morphology of the middle and inner ear and endocast that are largely unknown in baenids. Semicircular canals of BDM 004 are virtually identical to those of Eubaena cephalica and consistent in dimensions to those of other turtle taxa, including anterior and posterior semicircular canals that are robust and taller than the common crus and diverge from each other at an angle of approximately 90°. The digital endocast reveals a moderately flexed brain with rounded cerebral hemispheres and minimal separation between the metencephalon and myelencephalon. Its well‐preserved columella auris (stapes) is gracile with a posterodorsally flared basis columella. It arcs across the middle ear and flattens near its terminus. This study adds to the understanding of baenid middle and inner ear and neuroanatomical morphology and expands the morphological understanding of Pl. antiqua.

show abstract

Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

A well‐preserved cranium from the Judith River Formation (Montana, USA) reveals the inner ear and neuroanatomy of a Campanian baenid turtle

Smith

Berg

Adrian

2023

The Anatomical Record

Self Cite

View full text Add to dashboard Cite

show abstract

“…is exposed near the southwest periphery of SJB in the Zuni Basin (e.g., Craigg, 2001;Kelley, 1957Kelley, , 1967Wolfe, 1989). The Turonian is part of a significant temporal hiatus in the terrestrial fossil record of western North America, and the Moreno Hill turtle fauna was only recently described (Adrian et al, 2023). It contains the novel and earliest-known derived baenid, Edowa zuniensis (Adrian et al, 2023), which shares a "Plesiobaena grade" morphology with later taxa from northern Laramidia.…”

Section: Locomotion In the Herbivorous Theropod Nothronychus And Its ...mentioning

confidence: 99%

“…A stem turtle, Naomichelys sp. is represented (Adrian et al, 2023), and a trionychid has been documented, but not described (Wolfe et al, 1997). Moreno Hill turtles therefore consist of an aquatic, endemic form of surprisingly derived nature for its early occurrence (Edowa zuniensis), a semi-terrestrial relict form (Naomichelys sp.…”

Section: Locomotion In the Herbivorous Theropod Nothronychus And Its ...mentioning

confidence: 99%

14th Symposium on Mesozoic Terrestrial Ecosystems and Biota

2023

The Anatomical Record

View full text Add to dashboard Cite

“…nov. may have been the last member of the clade to occupy the eastern landmass, though this is made uncertain by the rarity of pertinently aged (pre-Santonian) terrestrial strata (Schwimmer, 1997;Brownstein, 2018;Noto et al, 2022). It occupied a temporal interval leading to the dominance of the derived clade Baenodda (comprised of the subfamilies Palatobaeninae and Eubaeninae), beginning in the Campanian (Gaffney, 1972;Gaffney and Meylan, 1988;Brinkman, 2003;Lyson and Joyce, 2009a;Joyce and Lyson, 2015;Adrian et al, 2019;Adrian et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

A revision of “Trinitichelys” maini (Testudinata: Baenidae) and additional material of its new genus from the Lewisville Formation (Woodbine Group, Cenomanian), Texas, USA

Adrian¹,

Smith²,

Noto³

2023

Palaeontol Electron

View full text Add to dashboard Cite

New cranial and postcranial (including shell and thin sections) material of the baenid turtle "Trinitichelys" maini is described and the species is taxonomically revised and referred to a new genus, Gehennachelys. The hypodigm of G. maini is expanded to include informative specimens allowing for a more comprehensive morphological understanding and shell reconstruction, as well as more thorough comparisons with confamilials.This taxon is phylogenetically placed at the base of Baenodda. Gehennachelys maini comb. nov. lacks a contribution of the posteriormost vertebral scale to the carapace margin and an omega-shaped femoral-anal sulcus, both historically regarded as baenodd synapomorphies, despite showing derived cranial characters for Baenodda. This inconsistency challenges the utility of these traits in diagnosing baenodds and highlights problems in resolving baenid relationships. Gehennachelys demonstrates that baenodds evolved as early as the middle Cenomanian, and it likely dispersed to southwestern Appalachia during a regression in the early Cenomanian, becoming the terminal baenid from the eastern North American landmass.

show abstract

A new baenid, Edowa zuniensis gen. et sp. nov., and other fossil turtles from the Upper Cretaceous Moreno Hill Formation (Turonian), New Mexico, USA

Cited by 4 publications

References 83 publications

A well‐preserved cranium from the Judith River Formation (Montana, USA) reveals the inner ear and neuroanatomy of a Campanian baenid turtle

A well‐preserved cranium from the Judith River Formation (Montana, USA) reveals the inner ear and neuroanatomy of a Campanian baenid turtle

14th Symposium on Mesozoic Terrestrial Ecosystems and Biota

A revision of “Trinitichelys” maini (Testudinata: Baenidae) and additional material of its new genus from the Lewisville Formation (Woodbine Group, Cenomanian), Texas, USA

Contact Info

Product

Resources

About