Pitus

Apr 21, 2026 - 03:17
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Pitus

← Previous revision Revision as of 21:46, 20 April 2026
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*''Pitus withamii'' (Lindley and Hutton) Arnold
*''Pitus withamii'' (Lindley and Hutton) Arnold
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'''''Pitus''''', also known as the '''Craigleith tree''', is an extinct [[genus]] of early "[[pteridosperm]]" [[gymnosperm]] seed plants. A [[morphogenus]] representing wood, they are primarily known from remains found in [[Euramerica]] (also known as Laurussia) during the Early [[Carboniferous]] ([[Mississippian]]), including Newfoundland and Scotland. They are particularly well known from fossils found in southern Scotland of [[Viséan]] age, when the area had a [[tropical climate]]. Their trunks reached at least 20 metres in height and 1 metre wide at the base, and were the tallest trees at the time. They are associated with [[Rachis#In botany|rachis]] of ''[[Lyginorachis]],'' and the leaves of ''[[Sphenopteris]].''{{cite journal |last1=Henderson |first1=Elsa |last2=Falcon-Lang |first2=Howard J. |title=Diversity and ontogeny of Pitus tree-trunks in the early Mississippian rocks of the Isle of Bute, Scotland: The importance of sample size and quantitative analysis for fossil wood systematics |journal=Review of Palaeobotany and Palynology |date=2011 |volume=166 |issue=3–4 |pages=202–212 |doi=10.1016/j.revpalbo.2011.05.009 |bibcode=2011RPaPa.166..202H }}{{cite journal |url=https://research-scotland.ac.uk/server/api/core/bitstreams/d5c89368-6428-461b-a8ed-3eee8dd6678e/content |journal=Royal Botanic Garden Edinburgh (RBGE) |title=The Craigleith Tree ("''Pitys withamii'' Tree"): Morphology, taxonomy, preservation and ecological context}} A distant relationship with modern [[cycads]] has been proposed. Attribution of remains from Australia to the genus has been questioned.{{Cite journal |last=Laloux |first=Bertrand |last2=Decombeix |first2=Anne-Laure |date=2022-12-12 |title=New Pitus and Eristophyton-type woods from the Tournaisian of Queensland, Australia: taxonomic, biogeographic, and palaeoclimatic implications |url=http://sciencepress.mnhn.fr/fr/periodiques/comptes-rendus-palevol/21/42 |journal=Comptes Rendus Palevol |issue=42 |doi=10.5852/cr-palevol2022v21a42 |issn=1777-571X}}
'''''Pitus''''', also known as the '''Craigleith tree''', is an extinct [[genus]] of early "[[pteridosperm]]" [[gymnosperm]] seed plants. A [[morphogenus]] representing wood, they are primarily known from remains found in [[Euramerica]] (also known as Laurussia) during the Early [[Carboniferous]] ([[Mississippian]]), including Newfoundland and Scotland. They are particularly well known from fossils found in southern Scotland of [[Viséan]] age, when the area had a [[tropical climate]]. Their trunks reached at least 20 metres in height and 1 metre wide at the base, and were the tallest trees at the time. They are associated with [[Rachis#In botany|rachis]] of ''[[Lyginorachis]],'' and the leaves of ''[[Sphenopteris]].''{{cite journal |last1=Henderson |first1=Elsa |last2=Falcon-Lang |first2=Howard J. |title=Diversity and ontogeny of Pitus tree-trunks in the early Mississippian rocks of the Isle of Bute, Scotland: The importance of sample size and quantitative analysis for fossil wood systematics |journal=Review of Palaeobotany and Palynology |date=2011 |volume=166 |issue=3–4 |pages=202–212 |doi=10.1016/j.revpalbo.2011.05.009 |bibcode=2011RPaPa.166..202H }}{{cite journal |url=https://research-scotland.ac.uk/server/api/core/bitstreams/d5c89368-6428-461b-a8ed-3eee8dd6678e/content |journal=Royal Botanic Garden Edinburgh (RBGE) |title=The Craigleith Tree ("''Pitys withamii'' Tree"): Morphology, taxonomy, preservation and ecological context|last=Cleal|first=Christopher J.|date=2022}} A distant relationship with modern [[cycads]] has been proposed. Attribution of remains from Australia to the genus has been questioned.{{Cite journal |last=Laloux |first=Bertrand |last2=Decombeix |first2=Anne-Laure |date=2022-12-12 |title=New Pitus and Eristophyton-type woods from the Tournaisian of Queensland, Australia: taxonomic, biogeographic, and palaeoclimatic implications |url=http://sciencepress.mnhn.fr/fr/periodiques/comptes-rendus-palevol/21/42 |journal=Comptes Rendus Palevol |issue=42 |doi=10.5852/cr-palevol2022v21a42 |issn=1777-571X}}


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