PBDB Collection

Mammal Bed, Durlston Bay (DB83) (Cretaceous of the United Kingdom)

Also known as Durdlestone Bay

Where: England, United Kingdom (50.6° N, 2.0° W: paleocoordinates 41.5° N, 7.8° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Worbarrow Tout Member (Lulworth Formation), Middle Berriasian (145.0 - 140.2 Ma)

• Marly Freshwater Mbr. now = top of Worbarrow Tout Mbr.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils

Collected by mainly S. H. Beckles in the 1800s; reposited in the BMNH

• Also mammal remains in the Sedgwick Museum, Cambridge, England

Primary reference: R. F. Damon. 1884. Handbook to the Geology of Weymouth, Portland, and Coast of Dorsetshire, from Swanage to Bridport-on-the-Sea, with Natural History of and Archaeological Notes. New and Enlarged Edition. Edward Stanford, London 1-250 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 72142: authorized by Matthew Carrano, entered by Matthew Carrano on 25.05.2007, edited by Mark Uhen, Roger Benson and Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Mammalia
-	Mammalia indet.¹¹ Mammalia indet.¹¹ Linnaeus 1758 mammal BMNH 48250, M13126 (femora); 48361 (left humerus)
Theriamorpha - Spalacotheriidae	"Spalacotherium tricuspidens" = Spalacotherium tricuspidens⁹, "Peralestes longirostris n. gen. n. sp." = Spalacotherium tricuspidens⁹ "Spalacotherium tricuspidens" = Spalacotherium tricuspidens⁹ Owen 1854 mammal BMNH 47748, 47749a, 47749b, 47750, M5633; Sedgwick Museum J11378 (fragment of right dentary) "Peralestes longirostris n. gen. n. sp." = Spalacotherium tricuspidens⁹ Owen 1854 mammal BMNH 47740, holotype maxilla; Sedwick Museum J11379 (skull fragment)
Peramura - Peramuridae	"Spalacotherium minus n. sp." = Kouriogenys minor⁹, Peramuroides tenuiscus n. gen. n. sp.¹, Peramus minor n. sp.⁹, Peramus tenuirostris n. gen. n. sp.⁹, "Leptocladus dubius n. sp." = Peramus dubius⁹ "Spalacotherium minus n. sp." = Kouriogenys minor⁹ Owen 1871 mammal BMNH 47751, holotype left mandible Peramuroides tenuiscus n. gen. n. sp.¹ Davis 2012 mammal Holotype partial mandible (BMNH M47744); BMNH M47799, a right dentary fragment preserving the angular process, an alveolus for the p5 and broken crowns of the m1–m3. Peramus minor n. sp.⁹ Owen 1871 mammal BMNH 47754, holotype left mandible Peramus tenuirostris n. gen. n. sp.⁹ Owen 1871 mammal BMNH 47742, 48404; originally, 47744 was also refereed here, but Davis (2012) made it the type of Peramuroides tenuiscus (see below) "Leptocladus dubius n. sp." = Peramus dubius⁹ Owen 1871 mammal BMNH 47739, holotype left mandible
Theriamorpha -	Durlstotherium newmani n. gen. n. sp.¹², Durlstodon ensomi n. gen. n. sp.¹² Durlstotherium newmani n. gen. n. sp.¹² Sweetman et al. 2017 eutherian Durlstodon ensomi n. gen. n. sp.¹² Sweetman et al. 2017 eutherian
Pantotheria -	Pantotheria indet.⁹, ? Pantotheria indet.⁹ Pantotheria indet.⁹ Marsh 1880 mammal BMNH 47769, 47792, 48208A, 48406, M13133, M13130 ? Pantotheria indet.⁹ Marsh 1880 mammal BMNH 47737, 47798, M13128
Theriamorpha - Dryolestidae	Dryolestidae indet.⁹, Peraspalax talpoides n. gen. n. sp.⁹, "Amblotherium mustelula n. sp." = Phascolestes mustelula⁹, "Phascolestes longirostris" = Phascolestes mustelula⁹, Amblotherium sp.¹¹, "Achyrodon nanus n. gen. n. sp." = Amblotherium nanum⁹, "Stylodon pusillus n. gen. n. sp." = Amblotherium pusillum⁹, "Kurtodon pusillus n. gen. n. sp." = Amblotherium pusillum¹¹, "Stylodon robustus n. sp." = Amblotherium pusillum⁹, "Achyrodon pusillus n. sp." = Amblotherium pusillum⁹, Amblotherium soricinum n. gen. n. sp.⁹ Dryolestidae indet.⁹ Marsh 1879 mammal BMNH 47770, 47795, 47803, 48244, 48401, 48405, M13132, M13131 Peraspalax talpoides n. gen. n. sp.⁹ Owen 1871 mammal BMNH 47738, holotype left mandible "Amblotherium mustelula n. sp." = Phascolestes mustelula⁹ Owen 1871 mammal BMNH 47753 (holotype, right mandible), 47808 "Phascolestes longirostris" = Phascolestes mustelula⁹ Owen 1871 mammal BMNH 47741, holotype left mandible Amblotherium sp.¹¹ Owen 1871 mammal BMNH 47800, 48369 "Achyrodon nanus n. gen. n. sp." = Amblotherium nanum⁹ Owen 1871 mammal BMNH 47745, 47758, 47760, 47785, 47786, 48403 "Stylodon pusillus n. gen. n. sp." = Amblotherium pusillum⁹ Owen 1866 mammal BMNH M5632, 47756, 47757, 47743, 47746, 47783, 47759, 47761, 47787, 47802, M10927 "Kurtodon pusillus n. gen. n. sp." = Amblotherium pusillum¹¹ Owen 1866 mammal BMNH 47755, holotype left maxilla; 48402 (right maxilla) "Stylodon robustus n. sp." = Amblotherium pusillum⁹ Owen 1866 mammal BMNH 47762, holotype left mandible "Achyrodon pusillus n. sp." = Amblotherium pusillum⁹ Owen 1866 mammal BMNH 47747, holotype left mandible Amblotherium soricinum n. gen. n. sp.⁹ Owen 1871 mammal BMNH 47752, holotype right mandible
Multituberculata - Allodontidae	"Plagiaulax minor n. sp." = Ctenacodon minor⁹ "Plagiaulax minor n. sp." = Ctenacodon minor⁹ Falconer 1857 multituberculate BMNH 47729 (holotype right mandible)
Multituberculata - Plagiaulacidae	Bolodon elongatus n. sp.¹¹, "Plagiaulax falconeri n. sp." = Bolodon falconeri⁹, "Plioprion minor n. sp." = Bolodon minor¹¹, Bolodon crassidens n. gen. n. sp.⁹, Bolodon osborni n. sp.¹¹, "Plagiaulax becklesii n. gen. n. sp." = Plagiaulax becklesii⁹, "Plagiaulax medius n. sp." = Plagiaulax becklesii⁹ Bolodon elongatus n. sp.¹¹ Simpson 1928 multituberculate BMNH 47736, holotype partial skull "Plagiaulax falconeri n. sp." = Bolodon falconeri⁹ Owen 1871 multituberculate BMNH 47730 (holotype right mandible) "Plioprion minor n. sp." = Bolodon minor¹¹ Falconer 1857 multituberculate Bolodon crassidens n. gen. n. sp.⁹ Owen 1871 multituberculate BMNH 47735, holotype maxilla + premaxilla Bolodon osborni n. sp.¹¹ Simpson 1928 multituberculate BMNH 47735a, holotype partial right maxilla "Plagiaulax becklesii n. gen. n. sp." = Plagiaulax becklesii⁹ Falconer 1857 multituberculate BMNH 47731 (holotype right mandible), 47732, 47733, 47734 "Plagiaulax medius n. sp." = Plagiaulax becklesii⁹ Falconer 1857 multituberculate BMNH 47728 (holotype left mandible)
Eutriconodonta - Triconodontidae	"Triconodon mordax n. gen. n. sp." = Triconodon mordax¹⁰, "Triacanthodon serrula n. gen. n. sp." = Triconodon mordax⁹, "Triconodon minor n. sp." = Triconodon mordax⁹, Triconodontinae indet.¹¹, "Triconodon ferox n. sp." = Trioracodon ferox⁹, "Triconodon occisor n. sp." = Trioracodon ferox⁹, Trioracodon oweni n. sp.¹¹ "Triconodon mordax n. gen. n. sp." = Triconodon mordax¹⁰ Owen 1859 mammal BMNH 47764, 47763, 47767, 47768, 47784, 47789, 47790, 47793a, 47794, 47796, 47806, 48395, 48396, M79, M3705 "Triacanthodon serrula n. gen. n. sp." = Triconodon mordax⁹ Owen 1859 mammal BMNH 47763, holotype fragmentary skull "Triconodon minor n. sp." = Triconodon mordax⁹ Owen 1859 mammal BMNH 47771, holotype mandible Triconodontinae indet.¹¹ Hay 1902 mammal BMNH 47797 (partial left maxilla), 47807 (anterior premolar) "Triconodon ferox n. sp." = Trioracodon ferox⁹ Owen 1871 mammal BMNH 47775, 47765, 47772, 47773, 47774, 47774a, 47776, 47777, 47778, 47779, 47780, 47781, 47788, 47791, 48397, 48404a, M10474; Sedgwick Museum J13141 (fragment of right dentary) "Triconodon occisor n. sp." = Trioracodon ferox⁹ Owen 1871 mammal BMNH 47782, holotype left mandible Trioracodon oweni n. sp.¹¹ Simpson 1928 mammal BMNH 47766, holotype mandible
Osteichthyes
Docodonta - Docodontidae	Peraiocynodon inexpectatus n. gen. n. sp.¹¹ Peraiocynodon inexpectatus n. gen. n. sp.¹¹ Simpson 1928 dodocont BMNH 48248, holotype left mandible
Reptilia
Squamata - Paramacellodidae	"Paramacellodus oweni n. gen. n. sp." = Paramacellodus oweni⁵, "Becklesisaurus scincoides n. gen. n. sp." = Paramacellodus oweni⁵, Saurillus robustidens n. sp.⁵, Becklesius sp.⁴ "Paramacellodus oweni n. gen. n. sp." = Paramacellodus oweni⁵ Hoffstetter 1967 squamates "Becklesisaurus scincoides n. gen. n. sp." = Paramacellodus oweni⁵ Hoffstetter 1967 squamates BMNH R8082 (holotype) Saurillus robustidens n. sp.⁵ Hoffstetter 1967 squamates BMNH R8130 (holotype dentary), R8086 (maxilla) Becklesius sp.⁴ Estes 1983 squamates BMNH R8182 (neotype dentary); plus remains of 35 individuals, includes 22 dentaries and 8 maxilla
Squamata -	Durotrigia triconidens n. gen. n. sp.⁵, Pseudosaurillus becklesi n. gen. n. sp.⁵, Parasaurillus pseudobtusus n. gen. n. sp.⁴, Parviraptor estesi n. gen. n. sp.³ Durotrigia triconidens n. gen. n. sp.⁵ Hoffstetter 1967 lizard BMNH R8122 (holotype) Pseudosaurillus becklesi n. gen. n. sp.⁵ Hoffstetter 1967 squamates Includes BMNH R8095 (holotype dentary and postcrania), 18 dentaries and 6 maxillae) Parasaurillus pseudobtusus n. gen. n. sp.⁴ Evans and Searle 2002 squamates Includes 44 dentaries and 8 maxillae and neotype left mandible (BMNH R8135) Parviraptor estesi n. gen. n. sp.³ Evans 1994 squamates BMNH R48388 (partial skull)
Squamata - Dorsetisauridae	Dorsetisaurus hebetidens n. sp.⁵, Dorsetisaurus purbeckensis n. gen. n. sp.⁵ Dorsetisaurus hebetidens n. sp.⁵ Hoffstetter 1967 squamates BMNH R8109 (holotype maxilla) Dorsetisaurus purbeckensis n. gen. n. sp.⁵ Hoffstetter 1967 squamates Includes BMNH R8129 (holotype), 15 dentaries and 10 maxilla
Testudinata - Compsemydidae	Tongemys enigmatica n. gen. n. sp.⁶ Tongemys enigmatica n. gen. n. sp.⁶ Joyce et al. 2022 turtle NHMUK PV OR 48262/48265, a near complete shell preserved on two separately catalogued slabs
Testudinata - Pleurosternidae	Pleurosternon bullockii⁷ Pleurosternon bullockii⁷ Owen 1842 turtle BMNH 48262 (partial juvenile shell), 48263, 48353, 48354, 48347, 48343, 48346, 48263c, 48263a, 48263e, 48344m 48351, 48252, 48252a (juvenile shells collected from Beckle's 'Mammal Pit' according to Milner (2004)); BMNH 48364 (right humerus), 48268 (right humerus), 48267 (left humerus), 48266 (left femur), 48369 (left femur), 48269 (phalanges)
Loricata - Goniopholididae	"Macellodus brodiei n. gen. n. sp." = Goniopholis brodiei² "Macellodus brodiei n. gen. n. sp." = Goniopholis brodiei² Owen 1854 crocodilian lost holotype maxilla
Theropoda -	Theropoda indet.⁸, Paraves indet.³ Theropoda indet.⁸ theropod CAMSM J 13956 Paraves indet.³ Sereno 1997 maniraptoran Isolated tooth on BMNH R48388 block
Theropoda - Dromaeosauridae	Nuthetes destructor⁸ Nuthetes destructor⁸ Owen 1854 maniraptoran CAMSM J 13951
Lepidosauria -	Rhynchocephalia indet.⁴ Rhynchocephalia indet.⁴ Günther 1867 rhynchocephalian

¹Davis 2012; ²Estes 1983; ³Evans 1994; ⁴Evans and Searle 2002; ⁵Hoffstetter 1967; ⁶Joyce et al. 2022; ⁷Lydekker 1889; ⁸Milner 2002; ⁹Owen 1871; ¹⁰Owen 1859; ¹¹Simpson 1928; ¹²Sweetman et al. 2017