000151299 001__ 151299
000151299 005__ 20251017144614.0
000151299 0247_ $$2doi$$a10.1080/14772019.2021.1873434
000151299 0248_ $$2sideral$$a124260
000151299 037__ $$aART-2021-124260
000151299 041__ $$aeng
000151299 100__ $$0(orcid)0000-0002-7279-049X$$aSender, L.M.
000151299 245__ $$aEvidence on vegetative and inflorescence morphology of Chloranthaceae (Angiospermae) from the Early Cretaceous (middle–late Albian) of Spain
000151299 260__ $$c2021
000151299 5060_ $$aAccess copy available to the general public$$fUnrestricted
000151299 5203_ $$aThe near-basal angiosperm family Chloranthaceae (with four living genera) is prominently represented in the Early Cretaceous fossil record by pollen and flowers, but its leaves, other vegetative parts and inflorescences are less well known. Here, we report impressions of leaves, stems and inflorescences from the middle–late Albian Escucha Formation of Teruel Province (NE Spain) that help redress this imbalance and bring into clearer focus the morphological and systematic diversity of this key group in the early angiosperm radiation. We used parsimony analysis of a morphological dataset of living and fossil Chloranthaceae to evaluate the position of the fossils on a molecular-based tree of extant taxa. Todziaphyllum elongatum gen. et sp. nov., with festooned semicraspedodromous venation and asymmetrical chloranthoid teeth, is most parsimoniously placed on the stem lineage of the living genus Hedyosmum. Leaves of Alcainea eklundiae gen. et sp. nov., with festooned semicraspedodromous venation and symmetric teeth, occur attached to stems in opposite pairs at swollen nodes with sheathing leaf bases and interpetiolar stipules, along with compound spikes of flowers with a monosymmetric androecium of three stamens, each flower subtended by a bract. This represents the first time that fossil leaves, stems and inflorescences of Chloranthaceae have been found in organic connection. Alcainea may be sister to Sarcandra, Chloranthus or the clade consisting of both genera, like the mesofossil Canrightiopsis. Leaf Type A, with festooned craspedodromous venation and symmetrical teeth, may be related to Ascarina. These observations provide direct evidence for the distinctive vegetative and inflorescence morphology of Chloranthaceae in the Early Cretaceous. They are consistent with the level of diversification inferred from coeval chloranthaceous pollen and floral mesofossils, including lines nested in crown group Chloranthaceae but not in any of living genera, and exhibiting character combinations not retained in living Chloranthaceae. http://zoobank.org/urn:lsid:zoobank.org:pub:08B96BA0-3B27-48A1-9E8F-CB5811AE8C07.
000151299 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000151299 590__ $$a3.152$$b2021
000151299 591__ $$aPALEONTOLOGY$$b6 / 54 = 0.111$$c2021$$dQ1$$eT1
000151299 591__ $$aEVOLUTIONARY BIOLOGY$$b29 / 51 = 0.569$$c2021$$dQ3$$eT2
000151299 592__ $$a0.934$$b2021
000151299 593__ $$aPaleontology$$c2021$$dQ1
000151299 594__ $$a5.5$$b2021
000151299 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000151299 700__ $$aDoyle, J.A.
000151299 700__ $$aUpchurch, G.R.Jr.
000151299 700__ $$aEndress, P.K.
000151299 700__ $$aVillanueva-Amadoz, U.
000151299 700__ $$aDiez, J.B.
000151299 773__ $$g18, 24 (2021), 2015-2042$$pJ. Syst. Palaeontol.$$tJOURNAL OF SYSTEMATIC PALAEONTOLOGY$$x1477-2019
000151299 8564_ $$s159500$$uhttps://zaguan.unizar.es/record/151299/files/texto_completo.pdf$$yPostprint
000151299 8564_ $$s1829756$$uhttps://zaguan.unizar.es/record/151299/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
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000151299 951__ $$a2025-10-17-14:18:45
000151299 980__ $$aARTICLE