Open access paper in JHE:

Total evidence phylogeny of platyrrhine primates and a comparison of
undated and tip-dating approaches

Abstract

There have been multiple published phylogenetic analyses of
platyrrhine primates (New World monkeys) using both morphological and
molecular data, but relatively few that have integrated both types of
data into a total evidence approach. Here, we present phylogenetic
analyses of recent and fossil platyrrhines, based on a total evidence
data set of 418 morphological characters and 10.2 kilobases of DNA
sequence data from 17 nuclear genes taken from previous studies, using
undated and tip-dating approaches in a Bayesian framework. We compare
the results of these analyses with molecular scaffold analyses using
maximum parsimony and Bayesian approaches, and we use a formal
information theoretic approach to identify unstable taxa. After a
posteriori pruning of unstable taxa, the undated and tip-dating
topologies appear congruent with recent molecular analyses and support
largely similar relationships, with strong support for Stirtonia as a
stem alouattine, Neosaimiri as a stem saimirine, Cebupithecia as a
stem pitheciine, and Lagonimico as a stem callitrichid. Both analyses
find three Greater Antillean subfossil platyrrhines (Xenothrix,
Antillothrix, and Paralouatta) to form a clade that is related to
Callicebus, congruent with a single dispersal event by the ancestor of
this clade to the Greater Antilles. They also suggest that the fossil Proteropithecia may not be closely related to pitheciines, and that
all known platyrrhines older than the Middle Miocene are stem taxa.
Notably, the undated analysis found the Early Miocene Panamacebus
(currently recognized as the oldest known cebid) to be unstable, and
the tip-dating analysis placed it outside crown Platyrrhini. Our
tip-dating analysis supports a late Oligocene or earliest Miocene (20.8–27.0 Ma) age for crown Platyrrhini, congruent with recent
molecular clock analyses.

https://www.sciencedirect.com/science/article/pii/S0047248422001531

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Op vrijdag 9 december 2022 om 13:17:23 UTC+1 schreef Pandora:

Open access paper in JHE:
Total evidence phylogeny of platyrrhine primates and a comparison of
undated and tip-dating approaches
There have been multiple published phylogenetic analyses of
platyrrhine primates (New World monkeys) using both morphological and molecular data, but relatively few that have integrated both types of
data into a total evidence approach. Here, we present phylogenetic
analyses of recent and fossil platyrrhines, based on a total evidence
data set of 418 morphological characters and 10.2 kilobases of DNA
sequence data from 17 nuclear genes taken from previous studies, using undated and tip-dating approaches in a Bayesian framework. We compare
the results of these analyses with molecular scaffold analyses using
maximum parsimony and Bayesian approaches, and we use a formal
information theoretic approach to identify unstable taxa. After a
posteriori pruning of unstable taxa, the undated and tip-dating
topologies appear congruent with recent molecular analyses and support largely similar relationships, with strong support for Stirtonia as a
stem alouattine, Neosaimiri as a stem saimirine, Cebupithecia as a
stem pitheciine, and Lagonimico as a stem callitrichid. Both analyses
find three Greater Antillean subfossil platyrrhines (Xenothrix, Antillothrix, and Paralouatta) to form a clade that is related to Callicebus, congruent with a single dispersal event by the ancestor of
this clade to the Greater Antilles. They also suggest that the fossil Proteropithecia may not be closely related to pitheciines, and that
all known platyrrhines older than the Middle Miocene are stem taxa.
Notably, the undated analysis found the Early Miocene Panamacebus
(currently recognized as the oldest known cebid) to be unstable, and
the tip-dating analysis placed it outside crown Platyrrhini. Our
tip-dating analysis supports a late Oligocene or earliest Miocene (20.8–27.0 Ma) age for crown Platyrrhini, congruent with recent
molecular clock analyses.

Thanks, Pandora, good work!

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Pandora wrote:

Open access paper in JHE:

Total evidence phylogeny of platyrrhine primates and a comparison of
undated and tip-dating approaches

Not sure what the point is. Everything there is younger than knows
South American finds:

https://www.sci.news/paleontology/science-fossils-earliest-south-american-monkeys-peru-02486.html

Sometimes the "Kitchen Sink" approach intended to hide things in plain
site...




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https://jtem.tumblr.com/post/703134545184210944

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littor...@gmail.com wrote:

Thanks, Pandora, good work!

Seems that even with fake dating, everything is too young to be of
much significance.



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https://jtem.tumblr.com/post/703239506359353345

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