1
40
2
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1038/nature09061" target="_blank" rel="noreferrer noopener">http://doi.org/10.1038/nature09061</a>
Pages
748–751
Issue
7307
Volume
466
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
The evolution of mammal-like crocodyliforms in the Cretaceous Period of Gondwana.
Publisher
An entity responsible for making the resource available
Nature
Date
A point or period of time associated with an event in the lifecycle of the resource
2010
2010-08-05
Subject
The topic of the resource
TANZANIA; ANIMAL classification; ANIMAL diversity; ANIMAL species; CRETACEOUS paleoecology; EVOLUTION (Biology); FOSSIL crocodylidae; TAXONOMY
Creator
An entity primarily responsible for making the resource
O'Connor Patrick M; Sertich Joseph J W; Stevens Nancy J; Roberts Eric M; Gottfried Michael D; Hieronymus Tobin L; Jinnah Zubair A; Ridgely Ryan; Ngasala Sifa E; Temba Jesuit
Description
An account of the resource
Fossil crocodyliforms discovered in recent years have revealed a level of morphological and ecological diversity not exhibited by extant members of the group. This diversity is particularly notable among taxa of the Cretaceous Period (144–65 million years ago) recovered from former Gondwanan landmasses. Here we report the discovery of a new species of Cretaceous notosuchian crocodyliform from the Rukwa Rift Basin of southwestern Tanzania. This small-bodied form deviates significantly from more typical crocodyliform craniodental morphologies, having a short, broad skull, robust lower jaw, and a dentition with relatively few teeth that nonetheless show marked heterodonty. The presence of morphologically complex, complementary upper and lower molariform teeth suggests a degree of crown–crown contact during jaw adduction that is unmatched among known crocodyliforms, paralleling the level of occlusal complexity seen in mammals and their extinct relatives. The presence of another small-bodied mammal-like crocodyliform in the Cretaceous of Gondwana indicates that notosuchians probably filled niches and inhabited ecomorphospace that were otherwise occupied by mammals on northern continents. [ABSTRACT FROM AUTHOR]
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1038/nature09061" target="_blank" rel="noreferrer noopener">10.1038/nature09061</a>
Rights
Information about rights held in and over the resource
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
2010
ANIMAL classification
ANIMAL diversity
ANIMAL species
CRETACEOUS paleoecology
Department of Anatomy & Neurobiology
EVOLUTION (Biology)
FOSSIL crocodylidae
Gottfried Michael D
Hieronymus Tobin L
Jinnah Zubair A
Nature
NEOMED College of Medicine
Ngasala Sifa E
O'Connor Patrick M
Ridgely Ryan
Roberts Eric M
Sertich Joseph J W
Stevens Nancy J
TANZANIA
TAXONOMY
Temba Jesuit
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1038/nature12161" target="_blank" rel="noreferrer noopener">http://doi.org/10.1038/nature12161</a>
Pages
611–614
Issue
7451
Volume
497
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Palaeontological evidence for an Oligocene divergence between Old World monkeys and apes.
Publisher
An entity responsible for making the resource available
Nature
Date
A point or period of time associated with an event in the lifecycle of the resource
2013
2013-05-30
Subject
The topic of the resource
AFRICA; APES; BIOTIC communities; CERCOPITHECIDAE; OLIGOCENE Epoch; PALEONTOLOGY; TANZANIA
Creator
An entity primarily responsible for making the resource
Stevens Nancy J; Seiffert Erik R; O'Connor Patrick M; Roberts Eric M; Schmitz Mark D; Krause Cornelia; Gorscak Eric; Ngasala Sifa; Hieronymus Tobin L; Temu Joseph
Description
An account of the resource
Apes and Old World monkeys are prominent components of modern African and Asian ecosystems, yet the earliest phases of their evolutionary history have remained largely undocumented. The absence of crown catarrhine fossils older than ∼20 million years (Myr) has stood in stark contrast to molecular divergence estimates of ∼25-30 Myr for the split between Cercopithecoidea (Old World monkeys) and Hominoidea (apes), implying long ghost lineages for both clades. Here we describe the oldest known fossil 'ape', represented by a partial mandible preserving dental features that place it with 'nyanzapithecine' stem hominoids. Additionally, we report the oldest stem member of the Old World monkey clade, represented by a lower third molar. Both specimens were recovered from a precisely dated 25.2-Myr-old stratum in the Rukwa Rift, a segment of the western branch of the East African Rift in Tanzania. These finds extend the fossil record of apes and Old World monkeys well into the Oligocene epoch of Africa, suggesting a possible link between diversification of crown catarrhines and changes in the African landscape brought about by previously unrecognized tectonic activity in the East African rift system. [ABSTRACT FROM AUTHOR]
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1038/nature12161" target="_blank" rel="noreferrer noopener">10.1038/nature12161</a>
Rights
Information about rights held in and over the resource
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
2013
Africa
APES
BIOTIC communities
CERCOPITHECIDAE
Department of Anatomy & Neurobiology
Gorscak Eric
Hieronymus Tobin L
Krause Cornelia
Nature
NEOMED College of Medicine
Ngasala Sifa
O'Connor Patrick M
OLIGOCENE Epoch
Paleontology
Roberts Eric M
Schmitz Mark D
Seiffert Erik R
Stevens Nancy J
TANZANIA
Temu Joseph