PBDB Collection

Lakshmi River (Miocene of Bhutan)

Where: Bhutan (26.9° N, 92.0° E: paleocoordinates 20.0° N, 91.3° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Siwalik Group, Middle Miocene (16.0 - 11.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; lithology not reported

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: MLK College, Balrampur, Uttar Pradesh, India

Primary reference: M. Prasad and P. P. Tripathi. 2000. Plant megafossils from the Siwalik sediments of Bhutan and their climatic significance. Biological Memoirs 26(1):6-19 [B. Allen/B. Allen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 223595: authorized by Bethany Allen, entered by Bethany Allen on 17.11.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

• Many of the new species identified here are poorly described, with no type specimens allocated

Show authors, comments, and common names

unclassified
-	Diplodiochus tertiarum¹, Trioma tertiarum¹, Hemigyrosa miocenica¹ Diplodiochus tertiarum¹ Trioma tertiarum¹ Hemigyrosa miocenica¹
Angiospermae
Violales - Flacourtiaceae	Gynocardia mioodorata¹ Gynocardia mioodorata¹ Prasad et al. 2004
Dicotyledoneae
Myrtales - Combretaceae	Combretum miocenicum n. sp. Combretum miocenicum n. sp. Prasad and Tripathi 2000 bushwillow Bt. 42 (holotype)
Angiospermae
Magnoliales - Magnoliaceae	Michelia bhutanensis n. sp.² Michelia bhutanensis n. sp.² Srivastava and Tripathi 2019 magnolia
Magnoliales - Annonaceae	Mitrephora siwalika Mitrephora siwalika Antal and Awasthi 1993 custard apple
Sapindales - Anacardiaceae	Gluta sahnii¹, Buchanania tertiarum¹ Gluta sahnii¹ cashew Buchanania tertiarum¹ cashew
Sapindales - Sapindaceae	Erioglossum mioedule¹, Harpullia tertiarum¹ Erioglossum mioedule¹ soapberry Harpullia tertiarum¹ tulipwood
Sapindales - Meliaceae	Toona siwalica Toona siwalica Awasthi and Lakhanpal 1990 mahogany
Malvales - Dipterocarpaceae	Dipterocarpus siwalicus, Hopenium kalagarhensis, Dipterocarpoxylon parabaudii, Vateria palaeocanaliculata¹ Dipterocarpus siwalicus Lakhanpal and Guleria 1987 Hopenium kalagarhensis Prasad and Prakash 1987 Dipterocarpoxylon parabaudii Prakash 1978 Vateria palaeocanaliculata¹
Malvales - Malvaceae	Sterculia miocenica¹ Sterculia miocenica¹ tropical chestnut
Rosales - Rhamnaceae	Zizyphus sabnii¹, Zizyphus bhutanensis¹ Zizyphus sabnii¹ buckthorn Zizyphus bhutanensis¹ buckthorn
Malpighiales - Clusiaceae	Kayea miofloribunda n. sp.¹, Calophyllum bhutanensis¹, Calophyllum siwalicus n. sp.¹ Kayea miofloribunda n. sp.¹ Srivastava and Ranjan 2019 Calophyllum bhutanensis¹ Calophyllum siwalicus n. sp.¹ Srivastava and Ranjan 2019
Fabales - Fabaceae	Butea siwalicus¹, Millettia koilabasensis Butea siwalicus¹ legume Millettia koilabasensis Prasad 1990 legume

¹Srivastava and Tripathi 2018; ²Srivastava and Tripathi 2019