The mandible and dentition of the Early Cretaceous monotreme
            <i>Teinolophos trusleri</i>

Rich, Thomas H.; Hopson, James A.; Gill, Pamela G.; Trusler, Peter; Rogers-Davidson, Sally; Morton, S.; Cifelli, Richard L.; Pickering, David; Kool, Lesley; Siu, Karen Kit Wan; Burgmann, Flame A.; Senden, Tim J.; Evans, Alistair R.; Wagstaff, Barbara E.; Seegets-Villiers, Doris E.; Corfe, Ian J.; Flannery, Timothy F.; Walker, Ken; Musser, Anne M.; Archer, Michael; Pian, Rebecca; Vickers-Rich, Patricia

doi:10.1080/03115518.2016.1180034

Cited by 32 publications

(12 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…G) Right humerus of Kryoryctes cadburyi (photo by Steven Morton—Pridmore et al 2005). H) Left dentary of Teinolophos trusleri retaining one premolar (of four) and four (of five) molars (composition reconstruction by Peter Trusler—Rich et al 2016).…”

Section: Fossil Record and Phylogeographymentioning

confidence: 99%

The platypus: evolutionary history, biology, and an uncertain future

Bino

Kingsford

Archer

et al. 2019

Journal of Mammalogy

Self Cite

View full text Add to dashboard Cite

The platypus ( Ornithorhynchus anatinus ) is one of the world’s most evolutionarily distinct mammals, one of five extant species of egg-laying mammals, and the only living species within the family Ornithorhynchidae. Modern platypuses are endemic to eastern mainland Australia, Tasmania, and adjacent King Island, with a small introduced population on Kangaroo Island, South Australia, and are widely distributed in permanent river systems from tropical to alpine environments. Accumulating knowledge and technological advancements have provided insights into many aspects of its evolutionary history and biology but have also raised concern about significant knowledge gaps surrounding distribution, population sizes, and trends. The platypus’ distribution coincides with many of Australia’s major threatening processes, including highly regulated and disrupted rivers, intensive habitat destruction, and fragmentation, and they were extensively hunted for their fur until the early 20th century. Emerging evidence of local population declines and extinctions identifies that ecological thresholds have been crossed in some populations and, if threats are not addressed, the species will continue to decline. In 2016, the IUCN Red Listing for the platypus was elevated to “Near Threatened,” but the platypus remains unlisted on threatened species schedules of any Australian state, apart from South Australia, or nationally. In this synthesis, we review the evolutionary history, genetics, biology, and ecology of this extraordinary mammal and highlight prevailing threats. We also outline future research directions and challenges that need to be met to help conserve the species.

show abstract

Section: Fossil Record and Phylogeographymentioning

confidence: 99%

The platypus: evolutionary history, biology, and an uncertain future

Bino

Kingsford

Archer

et al. 2019

Journal of Mammalogy

Self Cite

View full text Add to dashboard Cite

show abstract

“…9 and Horner et al . 10 ) fossils are common in sediments of the Early Cretaceous (Valanginian-Albian) Otway Group 11 along the coast. A previous histologic analysis concluded that hypsilophodontids from Victoria had physiologies similar to lower-latitude relatives based on comparable primary bone tissue organization and the presence of cyclical growth marks (CGMs) 6 .…”

Section: Introductionmentioning

confidence: 99%

“…Hypsilophodontid taxa from Victoria have been collected primarily from two localities: Flat Rocks and Dinosaur Cove. Sediments from the Flat Rocks locality are presently regarded as Late Valanginian or Barremian in age 11 , and named hypsilophodontid-grade taxa include Fulgurotherium australe and Qantassaurus intrepidus . The Dinosaur Cove locality is considered Albian in age, and hypsilophodontid taxa include Fulgurotherium australe , Leaellynasaura amicagraphica and Atlascopcosaurus loadsi 7 , 13 , 14 .…”

Section: Introductionmentioning

confidence: 99%

The bone microstructure of polar “hypsilophodontid” dinosaurs from Victoria, Australia

Woodward

Rich

Vickers-Rich

2018

Sci Rep

Self Cite

View full text Add to dashboard Cite

High-latitude (i.e., “polar”) Mesozoic fauna endured months of twilight and relatively low mean annual temperatures. Yet non-avian dinosaurs flourished in this taxing environment. Fossils of basal ornithopod dinosaurs (“hypsilophodontids”) are common in the Early Cretaceous high-latitude sediments of Victoria, Australia, and four taxa have been described; although their ontogenetic histories are largely unexplored. In the present study, eighteen tibiae and femora were utilized in the first multi-specimen ontogenetic histological analysis of Australian polar hypsilophodontids. The sample consists of eleven individuals from the Flat Rocks locality (Late Valanginian or Barremian), and five from the Dinosaur Cove locality (Albian). In both groups, growth was most rapid during the first three years, and skeletal maturity occurred between five and seven years. There is a weak asymptotic trend in a plot of growth mark count versus femur length, with considerable individual variation. Histology suggests two genera are present within the Dinosaur Cove sample, but bone microstructure alone could not distinguish genera within the Flat Rocks sample, or across the two geologically separate (~ 26 Ma) localities. Additional histologic sampling, combined with morphological analyses, may facilitate further differentiation between ontogenetic, individual, and species variation.

show abstract

“…Well-developed trigeminal nerves and electroreception are found in monotremes at least as far back as the early Cretaceous ( 23 , 24 ). However, there are differences in the extent of elaboration of these features within the group.…”

Section: Discussionmentioning

confidence: 99%