The following links are recommended by the author.
The Archives of the Dinosaur Mailing List,
the best way to stay current on dinosaur references thanks to Ben
Creisler, unfortunately the CMNH stopped hosting the archives in March
2021 and a new host has yet to be established as of October.
Paleofile.com is the best source of online information for Mesozoic tetrapods.
fossilworks' Gateway to the
Paleobiology Database is the next best source of such info, and extends
to all fossil taxa.
Dinosaur Genera List, the most complete and up to date list of dinosaurian taxa online, until mine's finished of course. :-)
Mikko's Phylogeny Archive
has a cladogram of everything, or at least tries hard to reach that goal.
ResearchGate includes legal copies of many pdfs.
SAPE links has
an exhaustive list of fossil bird articles available online.
The Polyglot Paleontologist
contains English translations of numerous foreign technical articles.
Journal Links,
the best source for technical journal websites I know.
DinoHunter contains an excellent
listing of publications arranged by year.
The Bibliography of Fossil Vertebrates, as long as it wasn't published in 1969-1980, or since 1993, it's probably here.
Phylocode, the biological taxonomic
system of the future, official as of May 2020.
ICZN, the zoological taxonomic system of the present.
PAUP* 4.0, get PAUP and make cladograms...
TNT, or get TNT and make
cladograms faster and cheaper.
Graeme T. Lloyd's Matrices
is an extremely useful compendium of basically every data matrix ever published
for phylogenetic analyses, in formats ready to be plugged into PAUP or TNT.
Scott Hartman's skeletal reconstructions are amazing and accurate.
John Conway has some of the best paleoart I've seen.
Ville Sinkkonen's life restorations are excellent.
Alain Beneteau's recent work would surely qualify to be described by a synonym for 'good' as well.