Hordle Cliff Mammal Beds (Eocene to of the United Kingdom)

Also known as Hordwell

Where: England, United Kingdom (50.7° N, 1.6° W: paleocoordinates 49.2° N, 5.5° W)

• coordinate based on nearby landmark

When: Totland Bay Member (Headon Hill Formation), MP 17A to MP 17A (37.2 - 33.9 Ma)

• From the Rodent and Mammal Beds: "Mammal Bed" is considered to be ca. 0.75 my older than than the "Rodent Bed" at this locality. Unit corresponds to European Land Mammal Age Zone MP 17.

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collection methods: bulk, mechanical, sieve,

• frog fossil part of MSUVP collection

Primary reference: S. Wood. 1844. Record of the discovery of an Alligator with several new Mammalia in the Freshwater Strata at Hordwell. Annals and Magazine of Natural History 14:349-351 [J. Alroy/E. Leckey/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28747: authorized by Jason Head, entered by Jason Head on 20.02.2003, edited by Erin Leckey, Patricia Holroyd, David Nicholson, Terri Cleary and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

• Cray, 1973 has a group of taxa that come from either the Mammal or Crocodile Bed including: Peratherium spp A and B, Scraeva woodi (n. gen., n. sp.), Opsiclaenodon major, Adapis magnus, Pseudoloris parvulus, Adelomys ? depereti, A. sp., ?Anchilophus sp., Plagiolophus annectens, P. minor, Cebochoerus sp., Choeropotamus depereti, Dacrytherium ovinum, Catodontherium sp., Haplobunodon lydekkeri, H. sp., Dichodon cervinum, Pseudamphimeryx hantonensis
Show authors, comments, and common names
unclassified
  -
Paludinae indet.3, Spalacodon sp. n. gen.
Paludinae indet.3
author has this listed as a genus
Spalacodon sp. n. gen.
part of a lower jaw
Mammalia
 Primates - Omomyidae
Vectipithex smithorum8
Vectipithex smithorum8 Hooker and Harrison 2008 tarsier
HZM.23.29269
 Theriamorpha -
Quercygale hastingsiae2
Quercygale hastingsiae2 placental
some type of seal,isolated teeth
 Perissodactyla - Palaeotheriidae
"Paloplotherium indet." = Plagiolophus (Paloplotherium)3, Palaeotherium sp.
"Paloplotherium indet." = Plagiolophus (Paloplotherium)3 odd-toed ungulate
multiple jaws
Palaeotherium sp. Cuvier 1804 odd-toed ungulate
scapula and portion of upper jaw
 Artiodactyla - Anthracotheriidae
Anthracotherium indet.3
Anthracotherium indet.3 Cuvier 1822 anthracothere
a crushed lower jaw
 Artiodactyla - Anoplotheriidae
? Anoplotherium sp.3, Anoplotherium commune3
? Anoplotherium sp.3 Cuvier 1804 even-toed ungulate
postcranial material
Anoplotherium commune3 Cuvier 1804 even-toed ungulate
a tooth
 Theriamorpha - Nyctitheriidae
? Nyctitheriidae indet.12
? Nyctitheriidae indet.12 Simpson 1928 placental
periotic bone HZM 204.27517 from "Mammal Beds"
 Theriamorpha - Talpidae
Eotalpa anglica7
Eotalpa anglica7 Sigé et al. 1977 mole
 Insectivora -
Insectivora indet.
Insectivora indet. Bowdich 1821 insectivoran
part of an upper jaw
 Theriamorpha - Herpetotheriidae
? Amphiperatherium sp.12
? Amphiperatherium sp.12 Filhol 1879 marsupial
periotic bone HZM 171.27021 from "Mammal Beds"
Reptilia
 Testudines - Trionychidae
Trionyx sp.3
Trionyx sp.3 Geoffroy Saint-Hilaire 1809 softshell turtle
 Testudines -
"Ocadia oweni n. sp." = Landreatchelys oweni11
"Ocadia oweni n. sp." = Landreatchelys oweni11 Lydekker 1889 turtle
 Testudines - Emydidae
Emys sp.3, Emys hordwellensis n. sp.13
Emys sp.3 Dumeril 1806 pond turtle
Emys hordwellensis n. sp.13 Seeley 1876 pond turtle
 Testudines - Geoemydidae
"Nicoria headonensis n. sp." = Geoemyda headonensis9
"Nicoria headonensis n. sp." = Geoemyda headonensis9 Hooley 1905 turtle
 Squamata - Tropidophiidae
cf. Dunnophis sp.6
cf. Dunnophis sp.6 Hecht 1959 dwarf boa
 Squamata - Boidae
Paraplatyspondylia batesi4, cf. Calamagras sp.6, Palaeopython cadurcensis6, Paleryx rhombifer6
Paraplatyspondylia batesi4 Holman and Harrison 1998 boa
MSUVP 1454-1457, four trunk vertebrae; MSUVP 2060, four mid-trunk vertebrae
cf. Calamagras sp.6 Cope 1873 dwarf boa
Palaeopython cadurcensis6 Filhol 1877 boa
MSUVP 2058, mid-trunk vertebra
Paleryx rhombifer6 Owen 1849 boa
 Squamata - Russellophiidae
Russellophis tenuis6
Russellophis tenuis6 Rage 1975 snake
MSUVP 2065, one anterior trunk vertebra
 Squamata -
Vectophis wardi6
Vectophis wardi6 Rage and Ford 1980 snake
 Squamata - Amphisbaenidae
Amphisbaenidae indet.1
Amphisbaenidae indet.1 Gray 1865 worm lizard
maxilla, a few vertebrae and dentaries closely related to Blanus
 Squamata - Anguidae
Anguinae "morph. A"10, Anguinae "morph. B"10, Anguinae "morph. C"10
Anguinae "morph. A"10 Gray 1825 squamates
BMNH R10320, partial left dentary
Anguinae "morph. B"10 Gray 1825 squamates
BMNH R10352–10360, BMNH R10524, BMNH R10528–10530, BMNH R13070–13071, dorsal vertebrae; BMNH R9719 part, dorsal vertebra; BMNH R10361–10368, BMNH R13070–13075, BMNH R10464–10470, BMNH R10570–10571, caudal vertebrae.
Anguinae "morph. C"10 Gray 1825 squamates
BMNH R10541–10545, osteoderms
 Squamata - Lacertidae
Plesiolacerta lydekkeri n. gen. n. sp.1
Plesiolacerta lydekkeri n. gen. n. sp.1 Hoffstetter 1942 squamates
BMNH No. 32 840a, dorsal vertebrae. Originally "Iguana europaea" in Lydekker 1888.
Aves
  -
Aves indet.3
Aves indet.3 Linnaeus 1758 bird
bird bones
Reptilia
 Loricata -
"Crocodilia indet." = Crocodylia3
"Crocodilia indet." = Crocodylia3 Owen 1842 crocodilian
 Crocodylia - Alligatoridae
Alligator hantoniensis n. sp.
Alligator hantoniensis n. sp. Wood 1846 alligator
most of the "head" with almost all of the upper teeth, humerus, dermal scutes and other post cranial elements
Amphibia
 Salientia -
Thaumastosaurus sulcatus n. sp.5
Thaumastosaurus sulcatus n. sp.5 frog
several maxillae with teeth
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.
Lepisosteus sp. Agassiz 1843 gar
the Marchioness also mentions "fish vertebrae and bones" they may be different fish, who knows
Bivalvia
 Pholadida - Corbulidae
"Potamomya sp." = Erodona3
"Potamomya sp." = Erodona3 Daudin 1802 clam
Gastropoda
 Heterostropha - Planorbidae
Planorbis platystoma3
unclassified
  -
Plantae indet.3
Plantae indet.3 Haeckel 1866
1Augé 2005; 2Cray 1973; 3Hastings 1853; 4Holman and Harrison 1998; 5Holman and Harrison 2003; 6Holman et al. 2006; 7Hooker 2016; 8Hooker and Harrison 2008; 9Hooley 1905; 10Klembara and Green 2010; 11Lydekker 1889; 12Norris and Harrison 1998; 13Seeley 1876