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Thomas R. Holtz Jr.

American paleontologist

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMar 1, 2026
Entity authorityQ617200 ↗
Source-derived summary

Thomas Richard Holtz Jr. (born September 13, 1965) is an American vertebrate palaeontologist, author, and principal lecturer at the University of Maryland's Department of Geology. He has published extensively on the phylogeny, morphology, ecomorphology, and locomotion of terrestrial predators, especially on tyrannosaurids and other theropod dinosaurs. He wrote the book Dinosaurs and is the author or co-author of the chapters "Saurischia", "Basal Tetanurae", and "Tyrannosauroidea" in the second edition of The Dinosauria. He has also been consulted as a scientific advisor for the Walking with Dinosaurs BBC series as well as the Discovery special When Dinosaurs Roamed America, and has appeared in numerous documentaries focused on prehistoric life, such as Jurassic Fight Club on History and Monsters Resurrected, Dinosaur Revolution and Clash of the Dinosaurs on Discovery.

Holtz is also the director of the Science and Global Change Program within the College Park Scholars living-learning community at the University of Maryland, College Park.

Early life

Holtz was born in California. He has stated that he wanted to be a dinosaur as a child, but upon learning that it is impossible to turn into a dinosaur he shifted his goals to study them. He attended Johns Hopkins University, where he met his future wife. He then attended Yale, where he met John Ostrom, who served as his academic advisor.

Editorial summary

Begin with the source’s own compact description: “Thomas R. Holtz Jr.” is american paleontologist. The dossier treats that line as a proposition to test through Thomas, Holtz and American, not as a finished interpretation.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1965—that can be checked directly. The authority record carries competing date values—1965-09-13, 1965—which should remain separate until their references and qualifiers are resolved. For this dossier, Thomas, Holtz and American is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “american paleontologist” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Mar 1, 2026. The linked authority identifier is Q617200. VIAF identifies the subject as 32178996. The Library of Congress control number is n97115923. 3 of 5 selected statements include explicit references; 2 carry qualifiers and 1 use preferred rank. The first chronological checks are 1965.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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  1. Establish the record: confirm the title “Thomas R. Holtz Jr.”, its source revision and the description used here.
  2. Expand the search: follow Thomas R. Holtz Jr. primary sources, Thomas R. Holtz Jr. archive and Thomas research across catalogues and specialist indexes.
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Source & attribution

This entry incorporates text from “Thomas R. Holtz Jr.” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.