PHILOSOPHICAL TRANSACTIONS 
I. Additional Evidence of the Affinities of the Extinct Marsupial Quadruped 
Thylacoleo carnifex (Owen). 
By Sir Richard Owen, K.C.B., F.R.S., &c. 
Received October 5,—Read November 25, 1886. 
[Plate 1.] 
Since the first indication of a large extinct Carnivore by a tooth obtained by Major 
Sir T. L. Mitchell in the cavern discovered by him in Wellington YaUey, Australia, 7 '' 
fossH remains from that and other localities of the same Continent have been succes¬ 
sively transmitted to me, which I have referred to the extinct genus and species 
Thylacoleo carnifex. Papers descriptive of these fossils have been admitted in the 
‘ Philosophical Transactions, 5 and their value has been enhanced by the comments they 
have excited in the works of contemporary palaeontologists, t These eminent authors 
received the support, in reference to objections to my conclusions, of the (then) 
Curator of the Australian Museum, Sydney, Mr. Gerard Krefft, who, in his contri¬ 
bution to the ‘Annals and Magazine of Natural History,’ series 3, vol. 18, 18G6, 
p. 148, .records his opinion that “ the famous marsupial Lion was not much more 
carnivorous than the Phalangers of the present time.” 
* ‘ Three Expeditions into the Interior of Eastern Australia,’ 8vo., 1838, vol. 2, p. 359, plate 32, 
figs. 10, 11. 
t Falconer, Dr. Hugh, F.R.S. : ‘ Proceedings of the Geological Society of London’ for March, 1857 ; 
‘Quarterly Journal’ of the Society, June, 1862, p. 353; ‘ Palaeontological Memoirs and Notes,’ 8vo., 
1868, vol. 2, p. 437. Professor Boyd Dawkins, F.R.S. : ‘ Quarterly Journal of the Geological Society of 
London,’ vol. 20, 1864, p. 412. Professor W. H. Flower, F.R.S., ‘ On the Affinities and probable Habits 
of the extinct Australian Marsupial Thylacoleo carnifex , Owen ’; ‘ Quarterly Journal of the Geological 
Society of London,’ vol. 24, 1868, p. 307. 
MDCCCLXXXVII. —B. B 
23.2.87 
